This build contains all features shown at Siggraph 2011 plus some improvements made in the weeks after that.
The lists of new features as well as the list of missing/WIP features and known defects will follow.
(Attachment removed)
I moved the Beta 2 change list here to be close to the Beta 1 lists:
viewtopic.php?f=62&t=5818&p=24668#p24668