This week the stabilization period continues with new fixes and improvements. We added the ability to repair fractured blocks without having to remove them entirely. Also, when compound blocks are damaged, only the appropriate parts will be damaged instead of all of the parts being damaged at once.
https://www.youtube.com/watch?v=Q7FCPpgmpas
Full list of new features and fixes: http://forum.keenswh.com/threads/7369798