diff --git a/system/Validation/Validation.php b/system/Validation/Validation.php
index 71be2b698a55..8afc6f5ba819 100644
--- a/system/Validation/Validation.php
+++ b/system/Validation/Validation.php
@@ -212,7 +212,7 @@ public function check($value, $rule, array $errors = []): bool
     }
 
     /**
-     * Returns actually validated data.
+     * Returns the actual validated data.
      */
     public function getValidated(): array
     {
diff --git a/system/Validation/ValidationInterface.php b/system/Validation/ValidationInterface.php
index 8c018b9a0dc2..2c30d645ee8a 100644
--- a/system/Validation/ValidationInterface.php
+++ b/system/Validation/ValidationInterface.php
@@ -148,4 +148,9 @@ public function listErrors(string $template = 'list'): string;
      * Displays a single error in formatted HTML as defined in the $template view.
      */
     public function showError(string $field, string $template = 'single'): string;
+
+    /**
+     * Returns the actual validated data.
+     */
+    public function getValidated(): array;
 }
diff --git a/user_guide_src/source/changelogs/v4.4.0.rst b/user_guide_src/source/changelogs/v4.4.0.rst
index df5b2c6da321..490c581c4900 100644
--- a/user_guide_src/source/changelogs/v4.4.0.rst
+++ b/user_guide_src/source/changelogs/v4.4.0.rst
@@ -29,6 +29,8 @@ or more was specified. See :ref:`upgrade-440-uri-setsegment`.
 
 The next segment (``+1``) of the current last segment can be set as before.
 
+.. _v440-interface-changes:
+
 Interface Changes
 =================
 
@@ -36,6 +38,8 @@ Interface Changes
     or implemented these interfaces, all these changes are backward compatible
     and require no intervention.
 
+- **Validation:** Added the ``getValidated()`` method in ``ValidationInterface``.
+
 Method Signature Changes
 ========================
 
diff --git a/user_guide_src/source/installation/upgrade_440.rst b/user_guide_src/source/installation/upgrade_440.rst
index 4d12d963b132..5e7ab6856ce9 100644
--- a/user_guide_src/source/installation/upgrade_440.rst
+++ b/user_guide_src/source/installation/upgrade_440.rst
@@ -60,6 +60,12 @@ by defining your own exception handler.
 
 See :ref:`custom-exception-handlers` for the detail.
 
+Interface Changes
+=================
+
+Some interface changes have been made. Classes that implement them should update
+their APIs to reflect the changes. See :ref:`v440-interface-changes` for details.
+
 Mandatory File Changes
 **********************