The test build of Blender 2.71 is out. The release notes are here.
While 2.70a has some Cycles baking ability, 2.71 extends Cycles to include most of the abilities in the materials system associated with Blender Render. There are possibilities here for Second Life™ users.
There are some improvements in modeling and sculpting that may help those modeling for SL.
I see several changes in animation. I doubt those improvements will transfer into SL. But, they may improve our work flow.
See Blender.org for details and the release notes foe specifics.