The 2.5.1 release of the AppArmor user space tools fixes bugs and includes minor enhancements over the AppArmor 2.5 release. Official kernel patch updates will be published at a later date.
For more information on what has changed in the AppArmor 2.5.1 release, please see https://apparmor.wiki.kernel.org/index.php/ReleaseNotes_2_5_1 .