www.joomla.org/announcements/release-new...2-5-28-released.html

The Joomla! Project is pleased to announce the immediate availability of Joomla 2.5.28. This is a maintenance release for the 2.5 series of Joomla! and is the final scheduled release of the series. Support for Joomla! 2.5 is scheduled to end on December 31, 2014.

End of support refers to when Joomla! no longer provides bug fixes, features, or security updates for a release. This is the time to make sure you have the latest available update of Joomla. Your website will continue to work as normal.