The latest GIT checkin consists of mostly patches that Andrew has been working with a couple of tweaks and other small bugs in other areas by gg.

What you will see for Render choices that new:
  EXR - choices of B44, B44A, DWAA, DWAB
  PNG - now has added choices in the render video wrench to include Compression level 0-9 and Depth 8/16
  TIFF - new choices of LZW, LZWMA, Deflate
We have done minimal testing and probably Andrew will test to make sure we got all of his patches correct!