Obviously I’m not on the ball with this one as the CodeIgniter team popped out another release, version 1.6.1, on Feb 12, 2008.

1.6.1 is consider a maintenance release but it does include some interesting new features such as active record caching and a path helper.

The official release text and link to changelog can be viewed at http://codeigniter.com/news/codeigniter_161_released/