Here are some of the new features:
- automatic checkout from svn and cvs (there are performance improvements for cvs as well)*
- project-level view of the server log through the webdashboard
- better clean up of child processes for more rapid stop/restart of the ccnet server
- better mono support
- view a project's configuration through the webdashboard.
And go to the project website for the complete release notes.
If you are a CVS user you need to change a few things in your config file.
Here is the direct link to the download on Sourceforge.