Note - I've zipped the torrents and will seed the archive - download the game from there because TPB won't accept the torrent direct from Wolfire.

From Their Website Wolfire.com

Overgrowth a197
February 7th, 2013

The features highlighted in the above video are as follows 
(as well as some that didn't make it into the video):

    Added arena level with progressive difficulty
    Added arena level to campaign menu
    Added GPU character skinning
    Scripts can attach items to characters
    Split challenge level and versus mode scripts off from level script
    Level scripts can use string message passing instead of function calls
    Added transparent placeholder objects
    Added placeholder and pathpoint objects to spawner utility tab
    Added alt-drag copy support to connectable objects
    Fixed Mac crash when loading levels with groups
    Fixed Windows zlib.dll issue (error 0xc0150002)
    Fixed Linux SSE memory alignment issue
    Fixed deleting characters during combat
    Fixed shader live update
    Fixed object parameter saving and loading

 

DO SUPPORT THE DEVELOPERS AND SEED, ENJOY!