CodeIgniter 2.x Release & Information

[eluser]WanWizard[/eluser]
I didn't say 'wait', I said 'use'. The current development version on Bitbucket contains quite a few bugfixes. Lots of major developments are based on CI2.0. I've been using it for months, it's very stable.

2.0 still supports PHP4, but new features will not support PHP4 anymore. For 2.1, all PHP4 support will be removed. Not that this is relevant, nobody's stopping you from using PHP5+ features in your application.