The January 2009 Release (build 22.214.171.1241) is live: http://www.codeplex.com/MFCMAPI
Mostly bug fixes this time around. Most prominent was the inability to add a property to an item. Also, the Property Tag Editor needed some serious TLC.
Here's a change list - see the Issue Tracker on Codeplex for more details, or look at the code: