Sorry for the long delay.
We have recently done a merge from Trunk to Harmony. I believe most of the crashes everyone was having came from instabilities in bmesh. Most of those bugs have been resolved in Trunk, and should now be resolved in Harmony.
Here is the graphicall link:
If you encounter a problem in Harmony, be sure to check if the problem also exists in Trunk or not.
There are no major feature changes since the last build.