- Enh #12816: Added `columnSchemaClass` option for `yii\db\Schema` which adds ability to specify custom `yii\db\ColumnSchema` class (nanodesu88)
- Enh #12881: Added `removeValue` method to `yii\helpers\BaseArrayHelper` (nilsburg)
- Enh #12901: Added `getDefaultHelpHeader` method to the `yii\console\controllers\HelpController` class to be able to override default help header in a class heir (diezztsk)
- Enh #13035: Use ArrayHelper::getValue() in SluggableBehavior::getValue() (thyseus)
- Enh: Added constants for specifying `yii\validators\CompareValidator::$type` (cebe)