Start your update engines! K2 v2.5.7 is now available to download.
If you're in Joomla! version 1.7 to version 2.5, you can update from 2.5.5 or 2.5.6 to this latest build directly via the built-in Joomla! updater. If you're on Joomla! 1.5 or if you use a version prior to K2 v2.5.5, just grab the zip file and upload on top.
There are no template changes since 2.5.4 so you can safely upgrade with no need to check you MVC overrides on your template.
This is a maintenance release. Compared to v2.5.6, we fixed warnings/bugs/annoyances/gremlins mainly appearing in Joomla! 2.5.