The latest version of the CodeIgniter framework has officially been released - version 1.6:

EllisLab is proud to announce the release of CodeIgniter 1.6, our open source web application framework. The release marks a new turn in the development of the framework, and has received considerable attention from both EllisLab developers and the community.

There's lots of new features in this new release including a Database Forge class, improvements to their Active Record implementation, an extendable Model class, and the addition of extendable Helpers.

You can find out more about the framework on the project's homepage or just head straight to the downloads section and grab the latest updates.