The data migration tool is more or less done and we are currently working on the documentation for the changes in the api, in guidance to upgrade the web application. A rough esitimation would be release by the end of next week.
Weeks have that unfortunate habit of passing... ;) Anyway, now its there:
http://world.episerver.com/en/Articles/Items/Migrating-StarCommunity-31-to-EPiServer-Community-32/