diff --git a/src/Control/Controller.php b/src/Control/Controller.php
index a4b4fbc1d..496ff64bd 100644
--- a/src/Control/Controller.php
+++ b/src/Control/Controller.php
@@ -533,14 +533,11 @@ class Controller extends RequestHandler implements TemplateGlobalProvider
      * called before Controller::init(). That is, you must call it in your controller's init method
      * before it calls parent::init().
      *
-     * @deprecated 4.1.0:5.0.0 Add this controller's url to SilverStripe\Security\BasicAuthMiddleware.URLPatterns injected property instead
+     * @deprecated 4.1.0 Add this controller's url to SilverStripe\Security\BasicAuthMiddleware.URLPatterns injected property instead
      */
     public function disableBasicAuth()
     {
-        Deprecation::notice(
-            '5.0',
-            'Add this controller\'s url to ' . BasicAuthMiddleware::class . '.URLPatterns injected property instead'
-        );
+        Deprecation::notice('4.1.0', 'Add this controller\'s url to SilverStripe\Security\BasicAuthMiddleware.URLPatterns injected property instead');
         $this->basicAuthEnabled = false;
     }
 
diff --git a/src/Control/CookieJar.php b/src/Control/CookieJar.php
index bc471b2d8..73467526c 100644
--- a/src/Control/CookieJar.php
+++ b/src/Control/CookieJar.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Control;
 
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\ORM\FieldType\DBDatetime;
 use LogicException;
 
@@ -200,10 +201,11 @@ class CookieJar implements Cookie_Backend
     /**
      * Get the correct samesite value - Session cookies use a different configuration variable.
      *
-     * @deprecated 5.0 The relevant methods will include a `$sameSite` parameter instead.
+     * @deprecated 4.12.0 The relevant methods will include a `$sameSite` parameter instead.
      */
     private function getSameSite(string $name): string
     {
+        Deprecation::notice('4.12.0', 'The relevant methods will include a `$sameSite` parameter instead.');
         if ($name === session_name()) {
             return Session::config()->get('cookie_samesite');
         }
diff --git a/src/Control/Director.php b/src/Control/Director.php
index 5a1cff2e1..91023b7a7 100644
--- a/src/Control/Director.php
+++ b/src/Control/Director.php
@@ -386,10 +386,11 @@ class Director implements TemplateGlobalProvider
      *
      * @return bool
      *
-     * @deprecated 5.0 Use Kernel::isFlushed instead
+     * @deprecated 4.12.0 Use Kernel::isFlushed instead
      */
     public static function isManifestFlushed()
     {
+        Deprecation::notice('4.12.0', 'Use Kernel::isFlushed instead');
         $kernel = Injector::inst()->get(Kernel::class);
 
         // Only CoreKernel implements this method at the moment
diff --git a/src/Control/Email/Email.php b/src/Control/Email/Email.php
index d6eb96801..0cb60a8ac 100644
--- a/src/Control/Email/Email.php
+++ b/src/Control/Email/Email.php
@@ -737,7 +737,7 @@ class Email extends ViewableData
     }
 
     /**
-     * @deprecated Will be removed without equivalent functionality to replace it
+     * @deprecated 4.12.0 Will be removed without equivalent functionality to replace it
      *
      * Debugging help
      *
diff --git a/src/Control/Email/SwiftMailer.php b/src/Control/Email/SwiftMailer.php
index 5dde0809f..33371acdc 100644
--- a/src/Control/Email/SwiftMailer.php
+++ b/src/Control/Email/SwiftMailer.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Control\Email;
 
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Core\Config\Configurable;
 use SilverStripe\Core\Injector\Injectable;
 use SilverStripe\Core\Injector\Injector;
@@ -37,6 +38,11 @@ class SwiftMailer implements Mailer
      * @param Email $message
      * @return bool Whether the sending was "successful" or not
      */
+    public function __construct()
+    {
+        Deprecation::notice('4.12.0', 'Will be replaced with symfony/mailer', Deprecation::SCOPE_CLASS);
+    }
+
     public function send($message)
     {
         $swiftMessage = $message->getSwiftMessage();
diff --git a/src/Control/HTTP.php b/src/Control/HTTP.php
index 13466b95d..84fce924d 100644
--- a/src/Control/HTTP.php
+++ b/src/Control/HTTP.php
@@ -372,43 +372,43 @@ class HTTP
     /**
      * Set the maximum age of this page in web caches, in seconds.
      *
-     * @deprecated 4.2.0:5.0.0 Use HTTPCacheControlMiddleware::singleton()->setMaxAge($age) instead
+     * @deprecated 4.2.0 Use HTTPCacheControlMiddleware::singleton()->setMaxAge($age) instead
      * @param int $age
      */
     public static function set_cache_age($age)
     {
-        Deprecation::notice('5.0', 'Use HTTPCacheControlMiddleware::singleton()->setMaxAge($age) instead');
+        Deprecation::notice('4.2.0', 'Use HTTPCacheControlMiddleware::singleton()->setMaxAge($age) instead');
         self::$cache_age = $age;
         HTTPCacheControlMiddleware::singleton()->setMaxAge($age);
     }
 
     /**
      * @param string $dateString
-     * @deprecated 4.2.0:5.0.0 Use HTTPCacheControlMiddleware::registerModificationDate() instead
+     * @deprecated 4.2.0 Use HTTPCacheControlMiddleware::registerModificationDate() instead
      */
     public static function register_modification_date($dateString)
     {
-        Deprecation::notice('5.0', 'Use HTTPCacheControlMiddleware::registerModificationDate() instead');
+        Deprecation::notice('4.2.0', 'Use HTTPCacheControlMiddleware::registerModificationDate() instead');
         HTTPCacheControlMiddleware::singleton()->registerModificationDate($dateString);
     }
 
     /**
      * @param int $timestamp
-     * @deprecated 4.2.0:5.0.0 Use HTTPCacheControlMiddleware::registerModificationDate() instead
+     * @deprecated 4.2.0 Use HTTPCacheControlMiddleware::registerModificationDate() instead
      */
     public static function register_modification_timestamp($timestamp)
     {
-        Deprecation::notice('5.0', 'Use HTTPCacheControlMiddleware::registerModificationDate() instead');
+        Deprecation::notice('4.2.0', 'Use HTTPCacheControlMiddleware::registerModificationDate() instead');
         HTTPCacheControlMiddleware::singleton()->registerModificationDate($timestamp);
     }
 
     /**
-     * @deprecated 4.2.0:5.0.0 Use ChangeDetectionMiddleware instead
+     * @deprecated 4.2.0 Use ChangeDetectionMiddleware instead
      * @param string $etag
      */
     public static function register_etag($etag)
     {
-        Deprecation::notice('5.0', 'Use ChangeDetectionMiddleware instead');
+        Deprecation::notice('4.2.0', 'Use ChangeDetectionMiddleware instead');
         if (strpos($etag ?? '', '"') !== 0) {
             $etag =  "\"{$etag}\"";
         }
@@ -426,11 +426,11 @@ class HTTP
      * output directly.
      *
      * @param HTTPResponse $response
-     * @deprecated 4.2.0:5.0.0 Headers are added automatically by HTTPCacheControlMiddleware instead.
+     * @deprecated 4.2.0 Headers are added automatically by HTTPCacheControlMiddleware instead.
      */
     public static function add_cache_headers($response = null)
     {
-        Deprecation::notice('5.0', 'Headers are added automatically by HTTPCacheControlMiddleware instead.');
+        Deprecation::notice('4.2.0', 'Headers are added automatically by HTTPCacheControlMiddleware instead.');
 
         // Skip if deprecated API is disabled
         if (Config::inst()->get(HTTP::class, 'ignoreDeprecatedCaching')) {
@@ -473,13 +473,14 @@ class HTTP
     /**
      * Ensure that all deprecated HTTP cache settings are respected
      *
-     * @deprecated 4.2.0:5.0.0 Use HTTPCacheControlMiddleware instead
+     * @deprecated 4.2.0 Use HTTPCacheControlMiddleware instead
      * @throws \LogicException
      * @param HTTPRequest $request
      * @param HTTPResponse $response
      */
     public static function augmentState(HTTPRequest $request, HTTPResponse $response)
     {
+        Deprecation::notice('4.2.0', 'Use HTTPCacheControlMiddleware instead');
         // Skip if deprecated API is disabled
         $config = Config::forClass(HTTP::class);
         if ($config->get('ignoreDeprecatedCaching')) {
@@ -560,11 +561,12 @@ class HTTP
      * is always in GMT: the number of seconds since January 1 1970 00:00:00 GMT)
      *
      * @param int $timestamp
-     * @deprecated 4.2.0:5.0.0 Use native php function gmdate() instead
+     * @deprecated 4.2.0 Use native php function gmdate() instead
      * @return string
      */
     public static function gmt_date($timestamp)
     {
+        Deprecation::notice('4.2.0', 'Use native php function gmdate() instead');
         return gmdate('D, d M Y H:i:s', $timestamp) . ' GMT';
     }
 
diff --git a/src/Control/HTTPRequest.php b/src/Control/HTTPRequest.php
index a5affd3b5..8ac2059b1 100644
--- a/src/Control/HTTPRequest.php
+++ b/src/Control/HTTPRequest.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Control;
 
+use SilverStripe\Dev\Deprecation;
 use ArrayAccess;
 use BadMethodCallException;
 use InvalidArgumentException;
@@ -914,6 +915,7 @@ class HTTPRequest implements ArrayAccess
      */
     public static function detect_method($origMethod, $postVars)
     {
+        Deprecation::notice('4.4.7', 'Will be removed without equivalent functionality');
         if (isset($postVars['_method'])) {
             if (!self::isValidHttpMethod($postVars['_method'])) {
                 throw new InvalidArgumentException('HTTPRequest::detect_method(): Invalid "_method" parameter');
diff --git a/src/Control/RequestProcessor.php b/src/Control/RequestProcessor.php
index 0dd2e962c..0661fcdda 100644
--- a/src/Control/RequestProcessor.php
+++ b/src/Control/RequestProcessor.php
@@ -9,7 +9,7 @@ use SilverStripe\Dev\Deprecation;
 /**
  * Middleware that provides back-support for the deprecated RequestFilter API.
  *
- * @deprecated 4.0.0:5.0.0 Use HTTPMiddleware directly instead.
+ * @deprecated 4.0.1 Use HTTPMiddleware directly instead.
  */
 class RequestProcessor implements HTTPMiddleware
 {
@@ -29,6 +29,7 @@ class RequestProcessor implements HTTPMiddleware
      */
     public function __construct($filters = [])
     {
+        Deprecation::notice('4.0.1', 'Use HTTPMiddleware directly instead.', Deprecation::SCOPE_CLASS);
         $this->filters = $filters;
     }
 
diff --git a/src/Control/Session.php b/src/Control/Session.php
index 5f97675d3..01623d87f 100644
--- a/src/Control/Session.php
+++ b/src/Control/Session.php
@@ -586,13 +586,13 @@ class Session
      * Recursively apply the changes represented in $data to $dest.
      * Used to update $_SESSION
      *
-     * @deprecated 4.1.0:5.0.0 Use recursivelyApplyChanges() instead
+     * @deprecated 4.1.0 Use recursivelyApplyChanges() instead
      * @param array $data
      * @param array $dest
      */
     protected function recursivelyApply($data, &$dest)
     {
-        Deprecation::notice('5.0', 'Use recursivelyApplyChanges() instead');
+        Deprecation::notice('4.1.0', 'Use recursivelyApplyChanges() instead');
         foreach ($data as $k => $v) {
             if (is_array($v)) {
                 if (!isset($dest[$k]) || !is_array($dest[$k])) {
diff --git a/src/Control/SimpleResourceURLGenerator.php b/src/Control/SimpleResourceURLGenerator.php
index 2077a6221..e6ea62175 100644
--- a/src/Control/SimpleResourceURLGenerator.php
+++ b/src/Control/SimpleResourceURLGenerator.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Control;
 
+use SilverStripe\Dev\Deprecation;
 use InvalidArgumentException;
 use SilverStripe\Core\Config\Config;
 use SilverStripe\Core\Convert;
@@ -159,12 +160,13 @@ class SimpleResourceURLGenerator implements ResourceURLGenerator
     /**
      * Resolve resource in the absence of a public/ folder
      *
-     * @deprecated 4.1.0:5.0.0 Will be removed without equivalent functionality when public/ folder becomes mandatory
+     * @deprecated 4.1.0 Will be removed without equivalent functionality when public/ folder becomes mandatory
      * @param string $relativePath
      * @return array List of [$exists, $absolutePath, $relativePath]
      */
     protected function resolveUnsecuredResource($relativePath)
     {
+        Deprecation::notice('4.1.0', 'Will be removed without equivalent functionality when public/ folder becomes mandatory');
         // Check if the path requested is public-only, but we have no public folder
         $publicOnly = $this->inferPublicResourceRequired($relativePath);
         if ($publicOnly) {
diff --git a/src/Core/BaseKernel.php b/src/Core/BaseKernel.php
index aedef7161..ee3370d54 100644
--- a/src/Core/BaseKernel.php
+++ b/src/Core/BaseKernel.php
@@ -260,10 +260,11 @@ abstract class BaseKernel implements Kernel
      *
      * @return string
      *
-     * @deprecated 5.0 use Director::get_environment_type() instead
+     * @deprecated 4.12.0 Use Director::get_environment_type() instead
      */
     public function getEnvironment()
     {
+        Deprecation::notice('4.12.0', 'Use Director::get_environment_type() instead');
         // Check set
         if ($this->enviroment) {
             return $this->enviroment;
@@ -288,10 +289,11 @@ abstract class BaseKernel implements Kernel
      *
      * @return null|string
      *
-     * @deprecated 5.0 Use Director::get_session_environment_type() instead
+     * @deprecated 4.12.0 Use Director::get_session_environment_type() instead
      */
     protected function sessionEnvironment()
     {
+        Deprecation::notice('4.12.0', 'Use Director::get_session_environment_type() instead');
         if (!$this->booted) {
             // session is not initialyzed yet, neither is manifest
             return null;
@@ -378,11 +380,11 @@ abstract class BaseKernel implements Kernel
      * The purpose of this method is to avoid loading PHPUnit test files with incompatible definitions.
      *
      * @return string[] List of CI types to ignore as defined by `Module`.
-     * @deprecated 5.0.0 Will be removed without equivalent functionality
+     * @deprecated 4.12.0 Will be removed without equivalent functionality
      */
     protected function getIgnoredCIConfigs(): array
     {
-        Deprecation::notice('5.0.0', 'This method will be removed in CMS 5');
+        Deprecation::notice('4.12.0', 'Will be removed without equivalent functionality');
         return [];
     }
 
diff --git a/src/Core/ClassInfo.php b/src/Core/ClassInfo.php
index 12116ef3c..38542c1d3 100644
--- a/src/Core/ClassInfo.php
+++ b/src/Core/ClassInfo.php
@@ -156,13 +156,13 @@ class ClassInfo
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0
+     * @deprecated 4.0.1 Use DataObject::getSchema()->baseDataClass()
      * @param string $class
      * @return string
      */
     public static function baseDataClass($class)
     {
-        Deprecation::notice('5.0', 'Use DataObject::getSchema()->baseDataClass()');
+        Deprecation::notice('4.0.1', 'Use DataObject::getSchema()->baseDataClass()');
         return DataObject::getSchema()->baseDataClass($class);
     }
 
@@ -371,11 +371,11 @@ class ClassInfo
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0
+     * @deprecated 4.0.1 Use DataObject::getSchema()->tableForField()
      */
     public static function table_for_object_field($candidateClass, $fieldName)
     {
-        Deprecation::notice('5.0', 'Use DataObject::getSchema()->tableForField()');
+        Deprecation::notice('4.0.1', 'Use DataObject::getSchema()->tableForField()');
         return DataObject::getSchema()->tableForField($candidateClass, $fieldName);
     }
 
diff --git a/src/Core/Config/Config_ForClass.php b/src/Core/Config/Config_ForClass.php
index 8eb95c750..5fd1066b3 100644
--- a/src/Core/Config/Config_ForClass.php
+++ b/src/Core/Config/Config_ForClass.php
@@ -43,10 +43,11 @@ class Config_ForClass
      * @param string $name
      * @param mixed $value
      * @return $this
+     * @deprecated 4.12.0 Use merge() instead
      */
     public function update($name, $value)
     {
-        Deprecation::notice('5.0', 'Use merge() instead');
+        Deprecation::notice('4.12.0', 'Use merge() instead');
         return $this->merge($name, $value);
     }
 
diff --git a/src/Core/Convert.php b/src/Core/Convert.php
index a84d8678b..0fb4293c1 100644
--- a/src/Core/Convert.php
+++ b/src/Core/Convert.php
@@ -161,14 +161,14 @@ class Convert
      * Encode a value as a JSON encoded string. You can optionally pass a bitmask of
      * JSON constants as options through to the encode function.
      *
-     * @deprecated 4.4.0:5.0.0 Use json_encode() instead
+     * @deprecated 4.4.0 Use json_encode() instead
      * @param  mixed $val     Value to be encoded
      * @param  int   $options Optional bitmask of JSON constants
      * @return string           JSON encoded string
      */
     public static function raw2json($val, $options = 0)
     {
-        Deprecation::notice('4.4', 'Please use json_encode() instead.');
+        Deprecation::notice('4.4.0', 'Use json_encode() instead');
 
         return json_encode($val, $options ?? 0);
     }
@@ -176,14 +176,14 @@ class Convert
     /**
      * Encode an array as a JSON encoded string.
      *
-     * @deprecated 4.4.0:5.0.0 Use json_encode() instead
+     * @deprecated 4.4.0 Use json_encode() instead
      * @param  array  $val     Array to convert
      * @param  int    $options Optional bitmask of JSON constants
      * @return string          JSON encoded string
      */
     public static function array2json($val, $options = 0)
     {
-        Deprecation::notice('4.4', 'Please use json_encode() instead.');
+        Deprecation::notice('4.4.0', 'Use json_encode() instead');
 
         return json_encode($val, $options ?? 0);
     }
@@ -261,13 +261,13 @@ class Convert
     /**
      * Convert a JSON encoded string into an object.
      *
-     * @deprecated 4.4.0:5.0.0 Use json_decode() instead
+     * @deprecated 4.4.0 Use json_decode() instead
      * @param string $val
      * @return object|boolean
      */
     public static function json2obj($val)
     {
-        Deprecation::notice('4.4', 'Please use json_decode() instead.');
+        Deprecation::notice('4.4.0', 'Use json_decode() instead');
 
         return json_decode($val ?? '');
     }
@@ -275,13 +275,13 @@ class Convert
     /**
      * Convert a JSON string into an array.
      *
-     * @deprecated 4.4.0:5.0.0 Use json_decode() instead
+     * @deprecated 4.4.0 Use json_decode() instead
      * @param string $val JSON string to convert
      * @return array|boolean
      */
     public static function json2array($val)
     {
-        Deprecation::notice('4.4', 'Please use json_decode() instead.');
+        Deprecation::notice('4.4.0', 'Use json_decode() instead');
 
         return json_decode($val ?? '', true);
     }
@@ -295,13 +295,13 @@ class Convert
      * @param boolean $disableDoctypes Disables the use of DOCTYPE, and will trigger an error if encountered.
      * false by default.
      * @param boolean $disableExternals Does nothing because xml entities are removed
-     * @deprecated 4.11.0:5.0.0
+     * @deprecated 4.11.0 Use a dedicated XML library instead
      * @return array
      * @throws Exception
      */
     public static function xml2array($val, $disableDoctypes = false, $disableExternals = false)
     {
-        Deprecation::notice('4.10', 'Use a dedicated XML library instead');
+        Deprecation::notice('4.11.0', 'Use a dedicated XML library instead');
 
         // Check doctype
         if ($disableDoctypes && strpos($val ?? '', '<!DOCTYPE') !== false) {
diff --git a/src/Core/Injector/Injector.php b/src/Core/Injector/Injector.php
index 7136a605b..d2649d873 100644
--- a/src/Core/Injector/Injector.php
+++ b/src/Core/Injector/Injector.php
@@ -854,13 +854,13 @@ class Injector implements ContainerInterface
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use Injector::has() instead
+     * @deprecated 4.0.1 Use Injector::has() instead
      * @param $name
      * @return string
      */
     public function hasService($name)
     {
-        Deprecation::notice('5.0', 'Use Injector::has() instead');
+        Deprecation::notice('4.0.1', 'Use Injector::has() instead');
 
         return $this->has($name);
     }
diff --git a/src/Core/Manifest/ClassLoader.php b/src/Core/Manifest/ClassLoader.php
index 95f05be68..238fa647f 100644
--- a/src/Core/Manifest/ClassLoader.php
+++ b/src/Core/Manifest/ClassLoader.php
@@ -142,10 +142,11 @@ class ClassLoader
      *
      * @param  string $class
      * @return bool
+     * @deprecated 4.0.1 Use ClassInfo::exists() instead
      */
     public function classExists($class)
     {
-        Deprecation::notice('4.0', 'Use ClassInfo::exists() instead');
+        Deprecation::notice('4.0.1', 'Use ClassInfo::exists() instead');
         return ClassInfo::exists($class);
     }
 }
diff --git a/src/Core/Manifest/Module.php b/src/Core/Manifest/Module.php
index 9ff35168b..77dd61ed2 100644
--- a/src/Core/Manifest/Module.php
+++ b/src/Core/Manifest/Module.php
@@ -206,10 +206,11 @@ class Module implements Serializable
      * The __serialize() magic method will be automatically used instead of this
      *
      * @return string
-     * @deprecated Use __serialize() instead
+     * @deprecated 4.12.0 Use __serialize() instead
      */
     public function serialize()
     {
+        Deprecation::notice('4.12.0', 'Use __serialize() instead');
         return json_encode([$this->path, $this->basePath, $this->composerData]);
     }
 
@@ -219,10 +220,11 @@ class Module implements Serializable
      * and the PHP version used in less than PHP 9.0
      *
      * @param string $serialized
-     * @deprecated Use __unserialize() instead
+     * @deprecated 4.12.0 Use __unserialize() instead
      */
     public function unserialize($serialized)
     {
+        Deprecation::notice('4.12.0', 'Use __unserialize() instead');
         list($this->path, $this->basePath, $this->composerData) = json_decode($serialized ?? '', true);
         $this->resources = [];
     }
@@ -275,52 +277,52 @@ class Module implements Serializable
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use getResource($path)->getRelativePath() instead
+     * @deprecated 4.0.1 Use getResource($path)->getRelativePath() instead
      * @param string $path
      * @return string
      */
     public function getRelativeResourcePath($path)
     {
-        Deprecation::notice('5.0', 'Use getResource($path)->getRelativePath() instead');
+        Deprecation::notice('4.0.1', 'Use getResource($path)->getRelativePath() instead');
         return $this
             ->getResource($path)
             ->getRelativePath();
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use getResource($path)->getPath() instead
+     * @deprecated 4.0.1 Use getResource($path)->getPath() instead
      * @param string $path
      * @return string
      */
     public function getResourcePath($path)
     {
-        Deprecation::notice('5.0', 'Use getResource($path)->getPath() instead');
+        Deprecation::notice('4.0.1', 'Use getResource($path)->getPath() instead');
         return $this
             ->getResource($path)
             ->getPath();
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use getResource($path)->getURL() instead
+     * @deprecated 4.0.1 Use getResource($path)->getURL() instead
      * @param string $path
      * @return string
      */
     public function getResourceURL($path)
     {
-        Deprecation::notice('5.0', 'Use getResource($path)->getURL() instead');
+        Deprecation::notice('4.0.1', 'Use getResource($path)->getURL() instead');
         return $this
             ->getResource($path)
             ->getURL();
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use getResource($path)->exists() instead
+     * @deprecated 4.0.1 Use getResource($path)->exists() instead
      * @param string $path
      * @return string
      */
     public function hasResource($path)
     {
-        Deprecation::notice('5.0', 'Use getResource($path)->exists() instead');
+        Deprecation::notice('4.0.1', 'Use getResource($path)->exists() instead');
         return $this
             ->getResource($path)
             ->exists();
@@ -331,11 +333,11 @@ class Module implements Serializable
      * that is observed is `PHP`
      * @return array List of configuration aspects e.g.: `['PHP' => 'CI_PHPUNIT_NINE']`
      * @internal
-     * @deprecated 5.0.0 Will be removed without equivalent functionality
+     * @deprecated 4.12.0 Will be removed without equivalent functionality
      */
     public function getCIConfig(): array
     {
-        Deprecation::notice('5.0.0', 'This method will be removed in CMS 5');
+        Deprecation::notice('4.12.0', 'Will be removed without equivalent functionality');
         return [
             'PHP' => $this->getPhpCiConfig()
         ];
diff --git a/src/Core/Startup/AbstractConfirmationToken.php b/src/Core/Startup/AbstractConfirmationToken.php
index 0fbbde1b4..00c03ead8 100644
--- a/src/Core/Startup/AbstractConfirmationToken.php
+++ b/src/Core/Startup/AbstractConfirmationToken.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Core\Startup;
 
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Control\Controller;
 use SilverStripe\Control\Director;
 use SilverStripe\Control\HTTPRequest;
@@ -15,7 +16,7 @@ use SilverStripe\Security\RandomGenerator;
  *
  * @internal This class is designed specifically for use pre-startup and may change without warning
  *
- * @deprecated 5.0 Will be removed without equivalent functionality
+ * @deprecated 4.12.0 Will be removed without equivalent functionality
  */
 abstract class AbstractConfirmationToken
 {
@@ -39,6 +40,11 @@ abstract class AbstractConfirmationToken
      * @param HTTPRequest $request
      * @return static The token container for the unvalidated $key given with the highest priority
      */
+    public function __construct()
+    {
+        Deprecation::notice('4.12.0', 'Will be removed without equivalent functionality', Deprecation::SCOPE_CLASS);
+    }
+
     public static function prepare_tokens($keys, HTTPRequest $request)
     {
         $target = null;
diff --git a/src/Core/Startup/ConfirmationTokenChain.php b/src/Core/Startup/ConfirmationTokenChain.php
index 0733cba31..aa6b29610 100644
--- a/src/Core/Startup/ConfirmationTokenChain.php
+++ b/src/Core/Startup/ConfirmationTokenChain.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Core\Startup;
 
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Control\Controller;
 use SilverStripe\Control\Director;
 use SilverStripe\Control\HTTPResponse;
@@ -13,7 +14,7 @@ use SilverStripe\Core\Convert;
  *
  * @internal This class is designed specifically for use pre-startup and may change without warning
  *
- * @deprecated 5.0 Will be removed without equivalent functionality
+ * @deprecated 4.12.0 Will be removed without equivalent functionality
  */
 class ConfirmationTokenChain
 {
@@ -25,6 +26,11 @@ class ConfirmationTokenChain
     /**
      * @param AbstractConfirmationToken $token
      */
+    public function __construct()
+    {
+        Deprecation::notice('4.12.0', 'Will be removed without equivalent functionality', Deprecation::SCOPE_CLASS);
+    }
+
     public function pushToken(AbstractConfirmationToken $token)
     {
         $this->tokens[] = $token;
diff --git a/src/Core/Startup/ErrorControlChain.php b/src/Core/Startup/ErrorControlChain.php
index db9c7d030..eef68fbe1 100644
--- a/src/Core/Startup/ErrorControlChain.php
+++ b/src/Core/Startup/ErrorControlChain.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Core\Startup;
 
+use SilverStripe\Dev\Deprecation;
 use Exception;
 
 /**
@@ -17,7 +18,7 @@ use Exception;
  *
  * @internal This class is designed specifically for use pre-startup and may change without warning
  *
- * @deprecated 5.0 Will be removed without equivalent functionality
+ * @deprecated 4.12.0 Will be removed without equivalent functionality
  */
 class ErrorControlChain
 {
@@ -62,6 +63,11 @@ class ErrorControlChain
      *
      * @return bool
      */
+    public function __construct()
+    {
+        Deprecation::notice('4.12.0', 'Will be removed without equivalent functionality', Deprecation::SCOPE_CLASS);
+    }
+
     public function hasErrored()
     {
         return $this->error;
diff --git a/src/Core/Startup/ErrorControlChainMiddleware.php b/src/Core/Startup/ErrorControlChainMiddleware.php
index 443ac66ca..a7eddfc2d 100644
--- a/src/Core/Startup/ErrorControlChainMiddleware.php
+++ b/src/Core/Startup/ErrorControlChainMiddleware.php
@@ -16,7 +16,7 @@ use SilverStripe\Security\Security;
  *
  * @internal This class is designed specifically for use pre-startup and may change without warning
  *
- * @deprecated 5.0 Will be removed without equivalent functionality
+ * @deprecated 4.12.0 Will be removed without equivalent functionality
  */
 class ErrorControlChainMiddleware implements HTTPMiddleware
 {
@@ -40,9 +40,9 @@ class ErrorControlChainMiddleware implements HTTPMiddleware
      */
     public function __construct(Application $application, $legacy = false)
     {
+        Deprecation::notice('4.12.0', 'Will be removed without equivalent functionality', Deprecation::SCOPE_CLASS);
         $this->application = $application;
         $this->legacy = $legacy;
-        Deprecation::notice('5.0', 'ErrorControlChainMiddleware is deprecated and will be removed completely');
     }
 
     /**
diff --git a/src/Core/Startup/ErrorDirector.php b/src/Core/Startup/ErrorDirector.php
index 5917387b7..421015a5d 100644
--- a/src/Core/Startup/ErrorDirector.php
+++ b/src/Core/Startup/ErrorDirector.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Core\Startup;
 
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Control\Director;
 use SilverStripe\Control\HTTPRequest;
 use SilverStripe\Control\HTTPResponse;
@@ -15,7 +16,7 @@ use SilverStripe\Security\Security;
  *
  * @internal This class is experimental API and may change without warning
  *
- * @deprecated 5.0 Will be removed without equivalent functionality
+ * @deprecated 4.12.0 Will be removed without equivalent functionality
  */
 class ErrorDirector extends Director
 {
@@ -27,6 +28,11 @@ class ErrorDirector extends Director
      * @param Kernel $kernel
      * @return null|HTTPResponse Redirection response, or null if not able to redirect
      */
+    public function __construct()
+    {
+        Deprecation::notice('4.12.0', 'Will be removed without equivalent functionality', Deprecation::SCOPE_CLASS);
+    }
+
     public function handleRequestWithTokenChain(
         HTTPRequest $request,
         ConfirmationTokenChain $confirmationTokenChain,
diff --git a/src/Core/Startup/ParameterConfirmationToken.php b/src/Core/Startup/ParameterConfirmationToken.php
index aa447f31f..a7b966bb7 100644
--- a/src/Core/Startup/ParameterConfirmationToken.php
+++ b/src/Core/Startup/ParameterConfirmationToken.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Core\Startup;
 
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Control\Controller;
 use SilverStripe\Control\Director;
 use SilverStripe\Control\HTTPRequest;
@@ -16,7 +17,7 @@ use SilverStripe\Security\RandomGenerator;
  *
  * @internal This class is designed specifically for use pre-startup and may change without warning
  *
- * @deprecated 5.0 Will be removed without equivalent functionality
+ * @deprecated 4.12.0 Will be removed without equivalent functionality
  */
 class ParameterConfirmationToken extends AbstractConfirmationToken
 {
@@ -47,6 +48,7 @@ class ParameterConfirmationToken extends AbstractConfirmationToken
      */
     public function __construct($parameterName, HTTPRequest $request)
     {
+        Deprecation::notice('4.12.0', 'Will be removed without equivalent functionality', Deprecation::SCOPE_CLASS);
         // Store the parameter name
         $this->parameterName = $parameterName;
         $this->request = $request;
diff --git a/src/Core/Startup/URLConfirmationToken.php b/src/Core/Startup/URLConfirmationToken.php
index 8115df821..bbab5c101 100644
--- a/src/Core/Startup/URLConfirmationToken.php
+++ b/src/Core/Startup/URLConfirmationToken.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Core\Startup;
 
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Control\Controller;
 use SilverStripe\Control\Director;
 use SilverStripe\Control\HTTPRequest;
@@ -12,7 +13,7 @@ use SilverStripe\Control\HTTPRequest;
  *
  * @internal This class is designed specifically for use pre-startup and may change without warning
  *
- * @deprecated 5.0 Will be removed without equivalent functionality
+ * @deprecated 4.12.0 Will be removed without equivalent functionality
  */
 class URLConfirmationToken extends AbstractConfirmationToken
 {
@@ -42,6 +43,7 @@ class URLConfirmationToken extends AbstractConfirmationToken
      */
     public function __construct($urlToCheck, HTTPRequest $request)
     {
+        Deprecation::notice('4.12.0', 'Will be removed without equivalent functionality', Deprecation::SCOPE_CLASS);
         $this->urlToCheck = $urlToCheck;
         $this->request = $request;
         $this->currentURL = $request->getURL(false);
diff --git a/src/Dev/CsvBulkLoader.php b/src/Dev/CsvBulkLoader.php
index fc6bda984..d7beb7103 100644
--- a/src/Dev/CsvBulkLoader.php
+++ b/src/Dev/CsvBulkLoader.php
@@ -173,10 +173,11 @@ class CsvBulkLoader extends BulkLoader
      * @param int $lines Number of lines per file
      *
      * @return array List of file paths
+     * @deprecated 4.12.0 Process files using a stream instead
      */
     protected function splitFile($path, $lines = null)
     {
-        Deprecation::notice('5.0', 'Process files using a stream instead');
+        Deprecation::notice('4.12.0', 'Process files using a stream instead');
 
         if (!is_int($lines)) {
             $lines = $this->config()->get("lines");
@@ -229,10 +230,11 @@ class CsvBulkLoader extends BulkLoader
 
     /**
      * @return string
+     * @deprecated 4.12.0 Name files yourself instead
      */
     protected function getNewSplitFileName()
     {
-        Deprecation::notice('5.0', 'Name files yourself instead');
+        Deprecation::notice('4.12.0', 'Name files yourself instead');
         return TEMP_PATH . DIRECTORY_SEPARATOR . uniqid(str_replace('\\', '_', static::class) ?? '', true) . '.csv';
     }
 
@@ -241,10 +243,11 @@ class CsvBulkLoader extends BulkLoader
      * @param boolean $preview
      *
      * @return BulkLoader_Result
+     * @deprecated 4.12.0 Process rows individually instead
      */
     protected function processChunk($filepath, $preview = false)
     {
-        Deprecation::notice('5.0', 'Process rows individually instead');
+        Deprecation::notice('4.12.0', 'Process rows individually instead');
         $results = BulkLoader_Result::create();
 
         $csv = new CSVParser(
diff --git a/src/Dev/DebugView.php b/src/Dev/DebugView.php
index 1023b3f8a..4cc3298d8 100644
--- a/src/Dev/DebugView.php
+++ b/src/Dev/DebugView.php
@@ -143,65 +143,65 @@ class DebugView
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use renderHeader() instead
+     * @deprecated 4.0.1 Use renderHeader() instead
      */
     public function writeHeader()
     {
-        Deprecation::notice('4.0', 'Use renderHeader() instead');
+        Deprecation::notice('4.0.1', 'Use renderHeader() instead');
         echo $this->renderHeader();
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use renderInfo() instead
+     * @deprecated 4.0.1 Use renderInfo() instead
      */
     public function writeInfo($title, $subtitle, $description = false)
     {
-        Deprecation::notice('4.0', 'Use renderInfo() instead');
+        Deprecation::notice('4.0.1', 'Use renderInfo() instead');
         echo $this->renderInfo($title, $subtitle, $description);
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use renderFooter() instead
+     * @deprecated 4.0.1 Use renderFooter() instead
      */
     public function writeFooter()
     {
-        Deprecation::notice('4.0', 'Use renderFooter() instead');
+        Deprecation::notice('4.0.1', 'Use renderFooter() instead');
         echo $this->renderFooter();
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use renderError() instead
+     * @deprecated 4.0.1 Use renderError() instead
      */
     public function writeError($httpRequest, $errno, $errstr, $errfile, $errline)
     {
-        Deprecation::notice('4.0', 'Use renderError() instead');
+        Deprecation::notice('4.0.1', 'Use renderError() instead');
         echo $this->renderError($httpRequest, $errno, $errstr, $errfile, $errline);
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use renderSourceFragment() instead
+     * @deprecated 4.0.1 Use renderSourceFragment() instead
      */
     public function writeSourceFragment($lines, $errline)
     {
-        Deprecation::notice('4.0', 'Use renderSourceFragment() instead');
+        Deprecation::notice('4.0.1', 'Use renderSourceFragment() instead');
         echo $this->renderSourceFragment($lines, $errline);
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use renderTrace() instead
+     * @deprecated 4.0.1 Use renderTrace() instead
      */
     public function writeTrace($trace)
     {
-        Deprecation::notice('4.0', 'Use renderTrace() instead');
+        Deprecation::notice('4.0.1', 'Use renderTrace() instead');
         echo $this->renderTrace($trace);
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use renderVariable() instead
+     * @deprecated 4.0.1 Use renderVariable() instead
      */
     public function writeVariable($val, $caller)
     {
-        Deprecation::notice('4.0', 'Use renderVariable() instead');
+        Deprecation::notice('4.0.1', 'Use renderVariable() instead');
         echo $this->renderVariable($val, $caller);
     }
 
diff --git a/src/Dev/InstallerTest.php b/src/Dev/InstallerTest.php
index af9463f9f..d9e89faba 100644
--- a/src/Dev/InstallerTest.php
+++ b/src/Dev/InstallerTest.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Dev;
 
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Control\Controller;
 
 /**
@@ -15,6 +16,11 @@ class InstallerTest extends Controller
         'testrewrite'
     ];
 
+    public function __construct()
+    {
+        Deprecation::notice('4.4.7', 'Will be removed without equivalent functionality', Deprecation::SCOPE_CLASS);
+    }
+
     public function testrewrite()
     {
         echo "OK";
diff --git a/src/Dev/SapphireInfo.php b/src/Dev/SapphireInfo.php
index 5886f7f53..dcfb004a6 100644
--- a/src/Dev/SapphireInfo.php
+++ b/src/Dev/SapphireInfo.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Dev;
 
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Control\Controller;
 use SilverStripe\Control\Director;
 use SilverStripe\Security\Permission;
@@ -19,6 +20,11 @@ class SapphireInfo extends Controller
         'environmenttype',
     ];
 
+    public function __construct()
+    {
+        Deprecation::notice('4.4.7', 'Will be removed without equivalent functionality', Deprecation::SCOPE_CLASS);
+    }
+
     protected function init()
     {
         parent::init();
diff --git a/src/Dev/TestKernel.php b/src/Dev/TestKernel.php
index 94fbf308e..acfc1728f 100644
--- a/src/Dev/TestKernel.php
+++ b/src/Dev/TestKernel.php
@@ -50,18 +50,22 @@ class TestKernel extends CoreKernel
     /**
      * Set a list of CI configurations that should cause a module's test not to be added to a manifest
      * @param string[] $ciConfigs
+     * @deprecated 4.12.0 Will be removed without equivalent functionality
      */
     public function setIgnoredCIConfigs(array $ciConfigs): self
     {
-        Deprecation::notice('5.0.0', 'Will be removed without equivalent functionality');
+        Deprecation::notice('4.12.0', 'Will be removed without equivalent functionality');
 
         $this->ciConfigs = $ciConfigs;
         return $this;
     }
 
+    /**
+     * @deprecated 4.12.0 Will be removed without equivalent functionality
+     */
     protected function getIgnoredCIConfigs(): array
     {
-        Deprecation::notice('5.0.0', 'Will be removed without equivalent functionality');
+        Deprecation::notice('4.12.0', 'Will be removed without equivalent functionality');
 
         return $this->ciConfigs;
     }
diff --git a/src/Forms/FieldList.php b/src/Forms/FieldList.php
index 494f800ef..c27471bc6 100644
--- a/src/Forms/FieldList.php
+++ b/src/Forms/FieldList.php
@@ -180,13 +180,13 @@ class FieldList extends ArrayList
     }
 
     /**
-     * @deprecated 4.1.0:5.0.0 Please use dataFields or saveableFields instead
+     * @deprecated 4.1.0 Please use dataFields or saveableFields instead
      * @param $list
      * @param bool $saveableOnly
      */
     protected function collateDataFields(&$list, $saveableOnly = false)
     {
-        Deprecation::notice('5.0', 'Please use dataFields() or SaveableFields()');
+        Deprecation::notice('4.1.0', 'Please use dataFields or saveableFields instead');
         if (!isset($list)) {
             $list = [];
         }
diff --git a/src/Forms/Form.php b/src/Forms/Form.php
index 303da5ccf..c816c53f3 100644
--- a/src/Forms/Form.php
+++ b/src/Forms/Form.php
@@ -1587,12 +1587,12 @@ class Form extends ViewableData implements HasRequestHandler
      * and _form_enctype.  These are the attributes of the form.  These fields
      * can be used to send the form to Ajax.
      *
-     * @deprecated 5.0 Will be removed without equivalent functionality
+     * @deprecated 4.12.0 Will be removed without equivalent functionality
      * @return string
      */
     public function formHtmlContent()
     {
-        Deprecation::notice('5.0');
+        Deprecation::notice('4.12.0', 'Will be removed without equivalent functionality');
         $this->IncludeFormTag = false;
         $content = $this->forTemplate();
         $this->IncludeFormTag = true;
diff --git a/src/Forms/GridField/GridFieldFilterHeader.php b/src/Forms/GridField/GridFieldFilterHeader.php
index c7fd7f086..6cd457e4c 100755
--- a/src/Forms/GridField/GridFieldFilterHeader.php
+++ b/src/Forms/GridField/GridFieldFilterHeader.php
@@ -435,13 +435,13 @@ class GridFieldFilterHeader extends AbstractGridFieldComponent implements GridFi
     /**
      * Generate fields for the legacy filter header row
      *
-     * @deprecated 5.0
+     * @deprecated 4.12.0 Use search field instead
      * @param GridField $gridfield
      * @return ArrayList|null
      */
     public function getLegacyFilterHeader(GridField $gridField)
     {
-        Deprecation::notice('5.0', 'Use search field instead');
+        Deprecation::notice('4.12.0', 'Use search field instead');
 
         $list = $gridField->getList();
         if (!$this->checkDataType($list)) {
diff --git a/src/Forms/GridField/GridFieldVersionedState.php b/src/Forms/GridField/GridFieldVersionedState.php
index 326ab0a5d..643adb14a 100644
--- a/src/Forms/GridField/GridFieldVersionedState.php
+++ b/src/Forms/GridField/GridFieldVersionedState.php
@@ -11,13 +11,13 @@ if (!class_exists(VersionedGridFieldState::class)) {
 
 
 /**
- * @deprecated 4.1.0:5.0.0 Use VersionedGridFieldState instead
+ * @deprecated 4.1.0 Use VersionedGridFieldState instead
  */
 class GridFieldVersionedState extends VersionedGridFieldState
 {
     public function __construct(array $versionedLabelFields = ['Name', 'Title'])
     {
+        Deprecation::notice('4.1.0', 'Use VersionedGridFieldState instead', Deprecation::SCOPE_CLASS);
         parent::__construct($versionedLabelFields);
-        Deprecation::notice('5.0', 'Use ' . VersionedGridFieldState::class . ' instead');
     }
 }
diff --git a/src/Forms/HTMLEditor/TinyMCEConfig.php b/src/Forms/HTMLEditor/TinyMCEConfig.php
index c1ba95ccd..fd47bfd13 100644
--- a/src/Forms/HTMLEditor/TinyMCEConfig.php
+++ b/src/Forms/HTMLEditor/TinyMCEConfig.php
@@ -875,21 +875,21 @@ class TinyMCEConfig extends HTMLEditorConfig implements i18nEntityProvider
     }
 
     /**
-     * @deprecated 4.0.0:5.0.0 Use getTinyMCEResourcePath() instead
+     * @deprecated 4.0.1 Use getTinyMCEResourcePath() instead
      */
     public function getTinyMCEPath()
     {
-        Deprecation::notice('5.0', 'use getTinyMCEResourcePath instead');
+        Deprecation::notice('4.0.1', 'Use getTinyMCEResourcePath() instead');
         return $this->getTinyMCEResourcePath();
     }
 
     /**
      * @return Module
-     * @deprecated 4.0.0:5.0.0
+     * @deprecated 4.0.1 Set base_dir or editor_css config instead
      */
     protected function getAdminModule()
     {
-        Deprecation::notice('5.0', 'Set base_dir or editor_css config instead');
+        Deprecation::notice('4.0.1', 'Set base_dir or editor_css config instead');
         return ModuleLoader::getModule('silverstripe/admin');
     }
 
diff --git a/src/Forms/HTMLEditor/TinyMCEGZIPGenerator.php b/src/Forms/HTMLEditor/TinyMCEGZIPGenerator.php
index aa49bbc8f..fde65954c 100644
--- a/src/Forms/HTMLEditor/TinyMCEGZIPGenerator.php
+++ b/src/Forms/HTMLEditor/TinyMCEGZIPGenerator.php
@@ -11,7 +11,7 @@ use TinyMCE_Compressor;
 /**
  * Uses the default tiny_mc_gzip.php handler
  *
- * @deprecated 4.0.0:5.0.0 Will be removed without equivalent functionality
+ * @deprecated 4.0.1 Will be removed without equivalent functionality
  */
 class TinyMCEGZIPGenerator implements TinyMCEScriptGenerator
 {
@@ -19,7 +19,7 @@ class TinyMCEGZIPGenerator implements TinyMCEScriptGenerator
 
     public function __construct()
     {
-        Deprecation::notice('5.0', 'Legacy tiny_mce_gzip compressor is deprecated');
+        Deprecation::notice('4.0.1', 'Will be removed without equivalent functionality', Deprecation::SCOPE_CLASS);
     }
 
     /**
diff --git a/src/Forms/TextField.php b/src/Forms/TextField.php
index 367da948d..20cac19ff 100644
--- a/src/Forms/TextField.php
+++ b/src/Forms/TextField.php
@@ -121,10 +121,11 @@ class TextField extends FormField implements TippableFieldInterface
 
     /**
      * @return string
+     * @deprecated 4.0.1 Use setValue() instead
      */
     public function InternallyLabelledField()
     {
-        Deprecation::notice('4.0', 'Use setValue() instead');
+        Deprecation::notice('4.0.1', 'Use setValue() instead');
 
         if (!$this->value) {
             $this->value = $this->Title();
diff --git a/src/Forms/TreeDropdownField.php b/src/Forms/TreeDropdownField.php
index b52052b15..69201889f 100644
--- a/src/Forms/TreeDropdownField.php
+++ b/src/Forms/TreeDropdownField.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Forms;
 
+use SilverStripe\Dev\Deprecation;
 use Exception;
 use InvalidArgumentException;
 use SilverStripe\Assets\Folder;
@@ -621,12 +622,13 @@ class TreeDropdownField extends FormField
     /**
      * HTML-encoded label for this node, including css classes and other markup.
      *
-     * @deprecated 4.0.0:5.0.0 Use setTitleField() instead
+     * @deprecated 4.0.1 Use setTitleField() instead
      * @param string $field
      * @return $this
      */
     public function setLabelField($field)
     {
+        Deprecation::notice('4.0.1', 'Use setTitleField() instead');
         $this->labelField = $field;
         return $this;
     }
@@ -634,11 +636,12 @@ class TreeDropdownField extends FormField
     /**
      * HTML-encoded label for this node, including css classes and other markup.
      *
-     * @deprecated 4.0.0:5.0.0 Use getTitleField() instead
+     * @deprecated 4.0.1 Use getTitleField() instead
      * @return string
      */
     public function getLabelField()
     {
+        Deprecation::notice('4.0.1', 'Use getTitleField() instead');
         return $this->labelField;
     }
 
diff --git a/src/Logging/MonologErrorHandler.php b/src/Logging/MonologErrorHandler.php
index c45e96422..d9bbd3ba9 100644
--- a/src/Logging/MonologErrorHandler.php
+++ b/src/Logging/MonologErrorHandler.php
@@ -18,13 +18,13 @@ class MonologErrorHandler implements ErrorHandler
      * Set the PSR-3 logger to send errors & exceptions to. Will overwrite any previously configured
      * loggers
      *
-     * @deprecated 4.4.0:5.0.0 Use pushLogger() instead
+     * @deprecated 4.4.0 Use pushLogger() instead
      * @param LoggerInterface $logger
      * @return $this
      */
     public function setLogger(LoggerInterface $logger)
     {
-        Deprecation::notice('4.4.0', 'Please use pushLogger() instead');
+        Deprecation::notice('4.4.0', 'Use pushLogger() instead');
 
         $this->loggers = [$logger];
         return $this;
@@ -33,12 +33,12 @@ class MonologErrorHandler implements ErrorHandler
     /**
      * Get the first registered PSR-3 logger to send errors & exceptions to
      *
-     * @deprecated 4.4.0:5.0.0 Use getLoggers() instead
+     * @deprecated 4.4.0 Use getLoggers() instead
      * @return LoggerInterface
      */
     public function getLogger()
     {
-        Deprecation::notice('4.4.0', 'Please use getLoggers() instead');
+        Deprecation::notice('4.4.0', 'Use getLoggers() instead');
 
         return reset($this->loggers);
     }
diff --git a/src/ORM/Connect/DBSchemaManager.php b/src/ORM/Connect/DBSchemaManager.php
index 8e7e48d6c..698f17cd5 100644
--- a/src/ORM/Connect/DBSchemaManager.php
+++ b/src/ORM/Connect/DBSchemaManager.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\ORM\Connect;
 
+use SilverStripe\Dev\Deprecation;
 use Exception;
 use SilverStripe\Control\Director;
 use SilverStripe\Core\Config\Config;
@@ -60,10 +61,11 @@ abstract class DBSchemaManager
      * @param string $table
      * @param string $class
      *
-     * @deprecated 4.0.0:5.0.0 Will be removed without equivalent functionality
+     * @deprecated 4.0.1 Will be removed without equivalent functionality
      */
     public static function showTableNameWarning($table, $class)
     {
+        Deprecation::notice('4.0.1', 'Will be removed without equivalent functionality');
         static::$table_name_warnings[$table] = $class;
     }
 
diff --git a/src/ORM/Connect/PDOConnector.php b/src/ORM/Connect/PDOConnector.php
index 243564d5d..c275d5d4f 100644
--- a/src/ORM/Connect/PDOConnector.php
+++ b/src/ORM/Connect/PDOConnector.php
@@ -140,9 +140,12 @@ class PDOConnector extends DBConnector implements TransactionManager
         return self::config()->get('emulate_prepare');
     }
 
+    /**
+     * @deprecated 4.5.0 Use native database drivers instead
+     */
     public function connect($parameters, $selectDB = false)
     {
-        Deprecation::notice('4.5', 'Use native database drivers instead');
+        Deprecation::notice('4.5.0', 'Use native database drivers instead');
 
         $this->flushStatements();
 
diff --git a/src/ORM/DB.php b/src/ORM/DB.php
index d6b873cf6..ed38b65c4 100644
--- a/src/ORM/DB.php
+++ b/src/ORM/DB.php
@@ -112,12 +112,12 @@ class DB
     }
 
     /**
-     * @deprecated Use DB::get_conn() instead
+     * @deprecated 4.0.1 Use DB::get_conn() instead
      * @todo PSR-2 standardisation will probably un-deprecate this
      */
     public static function getConn($name = 'default')
     {
-        Deprecation::notice('4.0', 'Use DB::get_conn() instead');
+        Deprecation::notice('4.0.1', 'Use DB::get_conn() instead');
         return self::get_conn($name);
     }
 
diff --git a/src/ORM/DataExtension.php b/src/ORM/DataExtension.php
index 85f0c1e5d..273f24c59 100644
--- a/src/ORM/DataExtension.php
+++ b/src/ORM/DataExtension.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\ORM;
 
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Core\Config\Config;
 use SilverStripe\Core\Extension;
 use SilverStripe\Forms\FieldList;
@@ -23,6 +24,7 @@ abstract class DataExtension extends Extension
      */
     public static function unload_extra_statics($class, $extension)
     {
+        Deprecation::notice('4.7.0', 'Will be removed without equivalent functionality');
         throw new Exception('unload_extra_statics gone');
     }
 
diff --git a/src/ORM/DataObject.php b/src/ORM/DataObject.php
index 249badbae..aac5f79cb 100644
--- a/src/ORM/DataObject.php
+++ b/src/ORM/DataObject.php
@@ -600,14 +600,14 @@ class DataObject extends ViewableData implements DataObjectInterface, i18nEntity
     /**
      * Copies the many_many and belongs_many_many relations from one object to another instance of the name of object.
      *
-     * @deprecated 4.1.0:5.0.0 Use duplicateRelations() instead
+     * @deprecated 4.1.0 Use duplicateRelations() instead
      * @param DataObject $sourceObject the source object to duplicate from
      * @param DataObject $destinationObject the destination object to populate with the duplicated relations
      * @param bool|string $filter
      */
     protected function duplicateManyManyRelations($sourceObject, $destinationObject, $filter)
     {
-        Deprecation::notice('5.0', 'Use duplicateRelations() instead');
+        Deprecation::notice('4.1.0', 'Use duplicateRelations() instead');
 
         // Get list of relations to duplicate
         if ($filter === 'many_many' || $filter === 'belongs_many_many') {
@@ -1266,10 +1266,11 @@ class DataObject extends ViewableData implements DataObjectInterface, i18nEntity
      * Public accessor for {@see DataObject::validate()}
      *
      * @return ValidationResult
+     * @deprecated 4.12.0 Use validate() instead
      */
     public function doValidate()
     {
-        Deprecation::notice('5.0', 'Use validate() instead');
+        Deprecation::notice('4.12.0', 'Use validate() instead');
         return $this->validate();
     }
 
diff --git a/src/ORM/DatabaseAdmin.php b/src/ORM/DatabaseAdmin.php
index 2b98a9cc7..b5b0e7dfa 100644
--- a/src/ORM/DatabaseAdmin.php
+++ b/src/ORM/DatabaseAdmin.php
@@ -376,11 +376,11 @@ class DatabaseAdmin extends Controller
      * @param string $fieldName    The field name to look in for obsolete class names
      * @param string $oldClassName The old class name
      * @param string $newClassName The new class name
-     * @deprecated 5.0 use updateLegacyClassNameField() instead
+     * @deprecated 4.12.0 Use updateLegacyClassNameField() instead
      */
     protected function updateLegacyClassNames($dataClass, $fieldName, $oldClassName, $newClassName)
     {
-        Deprecation::notice('5.0', 'use updateLegacyClassNameField instead');
+        Deprecation::notice('4.12.0', 'Use updateLegacyClassNameField() instead');
         $this->updateLegacyClassNameField($dataClass, $fieldName, [$oldClassName => $newClassName]);
     }
 
diff --git a/src/ORM/FieldType/DBClassName.php b/src/ORM/FieldType/DBClassName.php
index 1c7e68fef..0b5943593 100644
--- a/src/ORM/FieldType/DBClassName.php
+++ b/src/ORM/FieldType/DBClassName.php
@@ -35,10 +35,11 @@ class DBClassName extends DBEnum
     /**
      * Clear all cached classname specs. It's necessary to clear all cached subclassed names
      * for any classes if a new class manifest is generated.
+     * @deprecated 4.3.0 Use DBEnum::flushCache() instead
      */
     public static function clear_classname_cache()
     {
-        Deprecation::notice('4.3', 'Use DBEnum::flushCache() instead');
+        Deprecation::notice('4.3.0', 'Use DBEnum::flushCache() instead');
         DBEnum::flushCache();
     }
 
diff --git a/src/ORM/ValidationResult.php b/src/ORM/ValidationResult.php
index e7cda92e7..3ffe74bc2 100644
--- a/src/ORM/ValidationResult.php
+++ b/src/ORM/ValidationResult.php
@@ -232,10 +232,11 @@ class ValidationResult implements Serializable
      * The __serialize() magic method will be automatically used instead of this
      *
      * @return string
-     * @deprecated Use __serialize() instead
+     * @deprecated 4.12.0 Use __serialize() instead
      */
     public function serialize()
     {
+        Deprecation::notice('4.12.0', 'Use __serialize() instead');
         return json_encode([$this->messages, $this->isValid]);
     }
 
@@ -245,10 +246,11 @@ class ValidationResult implements Serializable
      * and the PHP version used in less than PHP 9.0
      *
      * @param string $serialized
-     * @deprecated Use __unserialize() instead
+     * @deprecated 4.12.0 Use __unserialize() instead
      */
     public function unserialize($serialized)
     {
+        Deprecation::notice('4.12.0', 'Use __unserialize() instead');
         list($this->messages, $this->isValid) = json_decode($serialized ?? '', true);
     }
 }
diff --git a/src/Security/Member.php b/src/Security/Member.php
index a17fcf801..83785910e 100644
--- a/src/Security/Member.php
+++ b/src/Security/Member.php
@@ -282,26 +282,26 @@ class Member extends DataObject
     /**
      * Get the default admin record if it exists, or creates it otherwise if enabled
      *
-     * @deprecated 4.0.0:5.0.0 Use DefaultAdminService::findOrCreateDefaultAdmin() instead
+     * @deprecated 4.0.1 Use DefaultAdminService::findOrCreateDefaultAdmin() instead
      * @return Member
      */
     public static function default_admin()
     {
-        Deprecation::notice('5.0', 'Use DefaultAdminService::findOrCreateDefaultAdmin() instead');
+        Deprecation::notice('4.0.1', 'Use DefaultAdminService::findOrCreateDefaultAdmin() instead');
         return DefaultAdminService::singleton()->findOrCreateDefaultAdmin();
     }
 
     /**
      * Check if the passed password matches the stored one (if the member is not locked out).
      *
-     * @deprecated 4.0.0:5.0.0 Use Authenticator::checkPassword() instead
+     * @deprecated 4.0.1 Use Authenticator::checkPassword() instead
      *
      * @param  string $password
      * @return ValidationResult
      */
     public function checkPassword($password)
     {
-        Deprecation::notice('5.0', 'Use Authenticator::checkPassword() instead');
+        Deprecation::notice('4.0.1', 'Use Authenticator::checkPassword() instead');
 
         // With a valid user and password, check the password is correct
         $result = ValidationResult::create();
@@ -448,15 +448,12 @@ class Member extends DataObject
     }
 
     /**
-     * @deprecated 5.0.0 Use Security::setCurrentUser() or IdentityStore::logIn() instead
+     * @deprecated 4.12.0 Use Security::setCurrentUser() or IdentityStore::logIn() instead
      *
      */
     public function logIn()
     {
-        Deprecation::notice(
-            '5.0.0',
-            'This method is deprecated and only logs in for the current request. Please use Security::setCurrentUser($user) or an IdentityStore'
-        );
+        Deprecation::notice('4.12.0', 'Use Security::setCurrentUser() or IdentityStore::logIn() instead');
         Security::setCurrentUser($this);
     }
 
@@ -509,16 +506,13 @@ class Member extends DataObject
      * has a database record of the same ID. If there is
      * no logged in user, FALSE is returned anyway.
      *
-     * @deprecated Use Security::getCurrentUser() instead
+     * @deprecated 4.12.0 Use Security::getCurrentUser() instead
      *
      * @return boolean TRUE record found FALSE no record found
      */
     public static function logged_in_session_exists()
     {
-        Deprecation::notice(
-            '5.0.0',
-            'This method is deprecated and now does not add value. Please use Security::getCurrentUser()'
-        );
+        Deprecation::notice('4.12.0', 'Use Security::getCurrentUser() instead');
 
         $member = Security::getCurrentUser();
         if ($member && $member->exists()) {
@@ -531,14 +525,11 @@ class Member extends DataObject
     /**
      * Logs this member out.
      *
-     * @deprecated Use Security::setCurrentUser(null) or an IdentityStore instead
+     * @deprecated 4.12.0 Use Security::setCurrentUser(null) or an IdentityStore instead
      */
     public function logOut()
     {
-        Deprecation::notice(
-            '5.0.0',
-            'This method is deprecated and now does not persist. Please use Security::setCurrentUser(null) or an IdentityStore'
-        );
+        Deprecation::notice('4.12.0', 'Use Security::setCurrentUser(null) or an IdentityStore instead');
 
         Injector::inst()->get(IdentityStore::class)->logOut(Controller::curr()->getRequest());
     }
@@ -770,16 +761,13 @@ class Member extends DataObject
     /**
      * Returns the current logged in user
      *
-     * @deprecated 5.0.0 Use Security::getCurrentUser() instead
+     * @deprecated 4.12.0 Use Security::getCurrentUser() instead
      *
      * @return Member
      */
     public static function currentUser()
     {
-        Deprecation::notice(
-            '5.0.0',
-            'This method is deprecated. Please use Security::getCurrentUser() or an IdentityStore'
-        );
+        Deprecation::notice('4.12.0', 'Use Security::getCurrentUser() instead');
 
         return Security::getCurrentUser();
     }
@@ -820,16 +808,13 @@ class Member extends DataObject
     /**
      * Get the ID of the current logged in user
      *
-     * @deprecated 5.0.0 Use Security::getCurrentUser() instead
+     * @deprecated 4.12.0 Use Security::getCurrentUser() instead
      *
      * @return int Returns the ID of the current logged in user or 0.
      */
     public static function currentUserID()
     {
-        Deprecation::notice(
-            '5.0.0',
-            'This method is deprecated. Please use Security::getCurrentUser() or an IdentityStore'
-        );
+        Deprecation::notice('4.12.0', 'Use Security::getCurrentUser() instead');
 
         $member = Security::getCurrentUser();
         if ($member) {
@@ -1118,10 +1103,11 @@ class Member extends DataObject
     /**
      * @param array $columns Column names on the Member record to show in {@link getTitle()}.
      * @param string $sep Separator
+     * @deprecated 4.12.0 Use Member.title_format config instead
      */
     public static function set_title_columns($columns, $sep = ' ')
     {
-        Deprecation::notice('5.0', 'Use Member.title_format config instead');
+        Deprecation::notice('4.12.0', 'Use Member.title_format config instead');
         if (!is_array($columns)) {
             $columns = [$columns];
         }
diff --git a/src/Security/PasswordValidator.php b/src/Security/PasswordValidator.php
index 51a0ba8b9..d6fad7fba 100644
--- a/src/Security/PasswordValidator.php
+++ b/src/Security/PasswordValidator.php
@@ -84,7 +84,7 @@ class PasswordValidator
      */
     public function minLength($minLength)
     {
-        Deprecation::notice('4.5.0', 'Use ->setMinLength($value) instead.');
+        Deprecation::notice('4.5.0', 'Use setMinLength() instead');
         return $this->setMinLength($minLength);
     }
 
@@ -100,10 +100,7 @@ class PasswordValidator
      */
     public function characterStrength($minScore, $testNames = null)
     {
-        Deprecation::notice(
-            '4.5.0',
-            'Use ->setMinTestScore($score) and ->setTestNames($names) instead.'
-        );
+        Deprecation::notice('4.5.0', 'Use setMinTestScore($score) and setTestNames($names) instead');
         $this->setMinTestScore($minScore);
         if ($testNames) {
             $this->setTestNames($testNames);
@@ -120,7 +117,7 @@ class PasswordValidator
      */
     public function checkHistoricalPasswords($count)
     {
-        Deprecation::notice('4.5.0', 'Use ->setHistoricCount($value) instead.');
+        Deprecation::notice('4.5.0', 'Use setHistoricCount($value) instead');
         return $this->setHistoricCount($count);
     }
 
diff --git a/src/Security/Permission.php b/src/Security/Permission.php
index ae2438083..1e5ac0376 100644
--- a/src/Security/Permission.php
+++ b/src/Security/Permission.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\Security;
 
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Core\ClassInfo;
 use SilverStripe\Core\Resettable;
 use SilverStripe\Dev\TestOnly;
@@ -664,6 +665,7 @@ class Permission extends DataObject implements TemplateGlobalProvider, Resettabl
      */
     public static function get_declared_permissions_list()
     {
+        Deprecation::notice('4.4.0', 'Will be removed without equivalent functionality');
         if (!self::$declared_permissions) {
             return null;
         }
@@ -688,6 +690,7 @@ class Permission extends DataObject implements TemplateGlobalProvider, Resettabl
      */
     public static function get_label_for_permission($perm)
     {
+        Deprecation::notice('4.4.0', 'Will be removed without equivalent functionality');
         $list = self::get_declared_permissions_list();
         if (array_key_exists($perm, $list ?? [])) {
             return $list[$perm];
@@ -706,6 +709,7 @@ class Permission extends DataObject implements TemplateGlobalProvider, Resettabl
      */
     protected static function traverse_declared_permissions($declared, &$list)
     {
+        Deprecation::notice('4.4.0', 'Will be removed without equivalent functionality');
         if (!is_array($declared)) {
             return;
         }
diff --git a/src/Security/RandomGenerator.php b/src/Security/RandomGenerator.php
index 96892eb06..4134b787f 100644
--- a/src/Security/RandomGenerator.php
+++ b/src/Security/RandomGenerator.php
@@ -14,11 +14,11 @@ class RandomGenerator
     /**
      * @return string A 128-character, randomly generated ASCII string
      * @throws Exception If no suitable CSPRNG is installed
-     * @deprecated 4.4.0:5.0.0 Use native php function random_bytes() instead
+     * @deprecated 4.4.0 Use native php function random_bytes() instead
      */
     public function generateEntropy()
     {
-        Deprecation::notice('4.4', __METHOD__ . ' has been deprecated. Use random_bytes instead');
+        Deprecation::notice('4.4.0', 'Use native php function random_bytes() instead');
 
         try {
             return bin2hex(random_bytes(64));
diff --git a/src/Security/Security.php b/src/Security/Security.php
index 6d01ff4b4..3a57af17e 100644
--- a/src/Security/Security.php
+++ b/src/Security/Security.php
@@ -464,7 +464,7 @@ class Security extends Controller implements TemplateGlobalProvider
     /**
      * Get the login forms for all available authentication methods
      *
-     * @deprecated 5.0.0 Use delegateToMultipleHandlers() instead
+     * @deprecated 4.12.0 Use delegateToMultipleHandlers() instead
      *
      * @return array Returns an array of available login forms (array of Form
      *               objects).
@@ -472,7 +472,7 @@ class Security extends Controller implements TemplateGlobalProvider
      */
     public function getLoginForms()
     {
-        Deprecation::notice('5.0.0', 'Now handled by delegateToMultipleHandlers');
+        Deprecation::notice('4.12.0', 'Use delegateToMultipleHandlers() instead');
 
         return array_map(
             function (Authenticator $authenticator) {
@@ -1073,11 +1073,11 @@ class Security extends Controller implements TemplateGlobalProvider
      *
      * @return Member
      *
-     * @deprecated 4.0.0:5.0.0 Use DefaultAdminService::findOrCreateDefaultAdmin()
+     * @deprecated 4.0.1 Use DefaultAdminService::findOrCreateDefaultAdmin()
      */
     public static function findAnAdministrator()
     {
-        Deprecation::notice('5.0.0', 'Please use DefaultAdminService::findOrCreateDefaultAdmin()');
+        Deprecation::notice('4.0.1', 'Use DefaultAdminService::findOrCreateDefaultAdmin()');
 
         $service = DefaultAdminService::singleton();
         return $service->findOrCreateDefaultAdmin();
@@ -1086,11 +1086,11 @@ class Security extends Controller implements TemplateGlobalProvider
     /**
      * Flush the default admin credentials
      *
-     * @deprecated 4.0.0:5.0.0 Use DefaultAdminService::clearDefaultAdmin()
+     * @deprecated 4.0.1 Use DefaultAdminService::clearDefaultAdmin()
      */
     public static function clear_default_admin()
     {
-        Deprecation::notice('5.0.0', 'Please use DefaultAdminService::clearDefaultAdmin()');
+        Deprecation::notice('4.0.1', 'Use DefaultAdminService::clearDefaultAdmin()');
 
         DefaultAdminService::clearDefaultAdmin();
     }
@@ -1107,11 +1107,11 @@ class Security extends Controller implements TemplateGlobalProvider
      * @param string $password The password (in cleartext)
      * @return bool True if successfully set
      *
-     * @deprecated 4.0.0:5.0.0 Use DefaultAdminService::setDefaultAdmin($username, $password)
+     * @deprecated 4.0.1 Use DefaultAdminService::setDefaultAdmin($username, $password)
      */
     public static function setDefaultAdmin($username, $password)
     {
-        Deprecation::notice('5.0.0', 'Please use DefaultAdminService::setDefaultAdmin($username, $password)');
+        Deprecation::notice('4.0.1', 'Use DefaultAdminService::setDefaultAdmin($username, $password)');
 
         DefaultAdminService::setDefaultAdmin($username, $password);
         return true;
@@ -1125,11 +1125,11 @@ class Security extends Controller implements TemplateGlobalProvider
      * @param string $password
      * @return bool
      *
-     * @deprecated 4.0.0:5.0.0 Use DefaultAdminService::isDefaultAdminCredentials() instead
+     * @deprecated 4.0.1 Use DefaultAdminService::isDefaultAdminCredentials() instead
      */
     public static function check_default_admin($username, $password)
     {
-        Deprecation::notice('5.0.0', 'Please use DefaultAdminService::isDefaultAdminCredentials($username, $password)');
+        Deprecation::notice('4.0.1', 'Use DefaultAdminService::isDefaultAdminCredentials() instead');
 
         /** @var DefaultAdminService $service */
         return DefaultAdminService::isDefaultAdminCredentials($username, $password);
@@ -1138,11 +1138,11 @@ class Security extends Controller implements TemplateGlobalProvider
     /**
      * Check that the default admin account has been set.
      *
-     * @deprecated 4.0.0:5.0.0 Use DefaultAdminService::hasDefaultAdmin() instead
+     * @deprecated 4.0.1 Use DefaultAdminService::hasDefaultAdmin() instead
      */
     public static function has_default_admin()
     {
-        Deprecation::notice('5.0.0', 'Please use DefaultAdminService::hasDefaultAdmin()');
+        Deprecation::notice('4.0.1', 'Use DefaultAdminService::hasDefaultAdmin() instead');
 
         return DefaultAdminService::hasDefaultAdmin();
     }
@@ -1150,12 +1150,12 @@ class Security extends Controller implements TemplateGlobalProvider
     /**
      * Get default admin username
      *
-     * @deprecated 4.0.0:5.0.0 Use DefaultAdminService::getDefaultAdminUsername() instead
+     * @deprecated 4.0.1 Use DefaultAdminService::getDefaultAdminUsername() instead
      * @return string
      */
     public static function default_admin_username()
     {
-        Deprecation::notice('5.0.0', 'Please use DefaultAdminService::getDefaultAdminUsername()');
+        Deprecation::notice('4.0.1', 'Use DefaultAdminService::getDefaultAdminUsername() instead');
 
         return DefaultAdminService::getDefaultAdminUsername();
     }
@@ -1163,12 +1163,12 @@ class Security extends Controller implements TemplateGlobalProvider
     /**
      * Get default admin password
      *
-     * @deprecated 4.0.0:5.0.0 Use DefaultAdminService::getDefaultAdminPassword() instead
+     * @deprecated 4.0.1 Use DefaultAdminService::getDefaultAdminPassword() instead
      * @return string
      */
     public static function default_admin_password()
     {
-        Deprecation::notice('5.0.0', 'Please use DefaultAdminService::getDefaultAdminPassword()');
+        Deprecation::notice('4.0.1', 'Use DefaultAdminService::getDefaultAdminPassword() instead');
 
         return DefaultAdminService::getDefaultAdminPassword();
     }
diff --git a/src/View/Embed/EmbedResource.php b/src/View/Embed/EmbedResource.php
index d7db19948..f2682bfbc 100644
--- a/src/View/Embed/EmbedResource.php
+++ b/src/View/Embed/EmbedResource.php
@@ -15,7 +15,7 @@ use SilverStripe\Dev\Deprecation;
  * Encapsulation of an embed tag, linking to an external media source.
  *
  * @see Embed
- * @deprecated 4.11..5.0 Use EmbedContainer instead
+ * @deprecated 4.11.0 Use EmbedContainer instead
  */
 class EmbedResource implements Embeddable
 {
@@ -46,7 +46,7 @@ class EmbedResource implements Embeddable
      */
     public function __construct($url)
     {
-        Deprecation::notice('4.11', 'Use EmbedContainer instead');
+        Deprecation::notice('4.11.0', 'Use EmbedContainer instead', Deprecation::SCOPE_CLASS);
         $this->url = $url;
     }
 
diff --git a/src/View/Requirements_Backend.php b/src/View/Requirements_Backend.php
index 1ca0ce2dd..3052d7b0a 100644
--- a/src/View/Requirements_Backend.php
+++ b/src/View/Requirements_Backend.php
@@ -239,10 +239,11 @@ class Requirements_Backend
      * Gets the minification service for this backend
      *
      * @return Requirements_Minifier
-     * @deprecated 4.0.0:5.0.0 Will be removed without equivalent functionality
+     * @deprecated 4.0.1 Will be removed without equivalent functionality
      */
     public function getMinifier()
     {
+        Deprecation::notice('4.0.1', 'Will be removed without equivalent functionality');
         return $this->minifier;
     }
 
diff --git a/src/View/SSViewer.php b/src/View/SSViewer.php
index cd0720a86..6dafb12f4 100644
--- a/src/View/SSViewer.php
+++ b/src/View/SSViewer.php
@@ -297,11 +297,11 @@ class SSViewer implements Flushable
 
     /**
      * @param string $theme The "base theme" name (without underscores).
-     * @deprecated 4.0.0:5.0.0 Use SSViewer::set_themes() instead
+     * @deprecated 4.0.1 Use SSViewer::set_themes() instead
      */
     public static function set_theme($theme)
     {
-        Deprecation::notice('4.0', 'Use the "SSViewer#set_themes" instead');
+        Deprecation::notice('4.0.1', 'Use SSViewer::set_themes() instead');
         self::set_themes([$theme, self::DEFAULT_THEME]);
     }
 
diff --git a/src/View/SSViewer_BasicIteratorSupport.php b/src/View/SSViewer_BasicIteratorSupport.php
index 44dc8923d..34b09b8bd 100644
--- a/src/View/SSViewer_BasicIteratorSupport.php
+++ b/src/View/SSViewer_BasicIteratorSupport.php
@@ -67,12 +67,12 @@ class SSViewer_BasicIteratorSupport implements TemplateIteratorProvider
     }
 
     /**
-     * @deprecated 5.0.0 Use IsFirst() instead
+     * @deprecated 4.12.0 Use IsFirst() instead
      * @return bool
      */
     public function First()
     {
-        Deprecation::notice('5.0.0', 'Use IsFirst() to avoid clashes with SS_Lists');
+        Deprecation::notice('4.12.0', 'Use IsFirst() instead');
         return $this->IsFirst();
     }
 
@@ -87,12 +87,12 @@ class SSViewer_BasicIteratorSupport implements TemplateIteratorProvider
     }
 
     /**
-     * @deprecated 5.0.0 Use IsLast() instead
+     * @deprecated 4.12.0 Use IsLast() instead
      * @return bool
      */
     public function Last()
     {
-        Deprecation::notice('5.0.0', 'Use IsLast() to avoid clashes with SS_Lists');
+        Deprecation::notice('4.12.0', 'Use IsLast() instead');
         return $this->IsLast();
     }
 
diff --git a/src/View/Shortcodes/EmbedShortcodeProvider.php b/src/View/Shortcodes/EmbedShortcodeProvider.php
index 2e7c59149..7b844ba60 100644
--- a/src/View/Shortcodes/EmbedShortcodeProvider.php
+++ b/src/View/Shortcodes/EmbedShortcodeProvider.php
@@ -160,11 +160,11 @@ class EmbedShortcodeProvider implements ShortcodeHandler
      * @param Adapter $embed
      * @param array $arguments Additional shortcode params
      * @return string
-     * @deprecated 4.11..5.0 Use embeddableToHtml() instead
+     * @deprecated 4.11.0 Use embeddableToHtml() instead
      */
     public static function embedForTemplate($embed, $arguments)
     {
-        Deprecation::notice('4.11', 'Use embeddableToHtml() instead');
+        Deprecation::notice('4.11.0', 'Use embeddableToHtml() instead');
         switch ($embed->getType()) {
             case 'video':
             case 'rich':
diff --git a/src/View/ViewableData.php b/src/View/ViewableData.php
index 0941cde84..33713c257 100644
--- a/src/View/ViewableData.php
+++ b/src/View/ViewableData.php
@@ -619,11 +619,11 @@ class ViewableData implements IteratorAggregate
      * project directory.
      *
      * @return string URL to the current theme
-     * @deprecated 4.0.0:5.0.0 Use ModuleResourceLoader::resourcePath() or ModuleResourceLoader::resourceURL() instead
+     * @deprecated 4.0.1 Use ModuleResourceLoader::resourcePath() or ModuleResourceLoader::resourceURL() instead
      */
     public function ThemeDir()
     {
-        Deprecation::notice('5.0', 'Use $resourcePath or $resourceURL template helpers instead');
+        Deprecation::notice('4.0.1', 'Use ModuleResourceLoader::resourcePath() or ModuleResourceLoader::resourceURL() instead');
         $themes = SSViewer::get_themes();
         foreach ($themes as $theme) {
             // Skip theme sets
diff --git a/src/i18n/Messages/Symfony/FlushInvalidatedResource.php b/src/i18n/Messages/Symfony/FlushInvalidatedResource.php
index 4d7b89372..89db8664c 100644
--- a/src/i18n/Messages/Symfony/FlushInvalidatedResource.php
+++ b/src/i18n/Messages/Symfony/FlushInvalidatedResource.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\i18n\Messages\Symfony;
 
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Core\Flushable;
 use Symfony\Component\Config\Resource\DirectoryResource;
 use Symfony\Component\Config\Resource\SelfCheckingResourceInterface;
@@ -54,10 +55,11 @@ class FlushInvalidatedResource implements SelfCheckingResourceInterface, \Serial
      * The __serialize() magic method will be automatically used instead of this
      *
      * @return string
-     * @deprecated Use __serialize() instead
+     * @deprecated 4.12.0 Use __serialize() instead
      */
     public function serialize()
     {
+        Deprecation::notice('4.12.0', 'Use __serialize() instead');
         return '';
     }
 
@@ -67,10 +69,11 @@ class FlushInvalidatedResource implements SelfCheckingResourceInterface, \Serial
      * and the PHP version used in less than PHP 9.0
      *
      * @param string $serialized
-     * @deprecated Use __unserialize() instead
+     * @deprecated 4.12.0 Use __unserialize() instead
      */
     public function unserialize($serialized)
     {
+        Deprecation::notice('4.12.0', 'Use __unserialize() instead');
         // no-op
     }