I am really excited for the next one and i cant find any info on when it starts, anyone know?
blenderguy2008 is currently working on a new basefile as soon as I have a copy of it I will start the next round
See this thread http://blenderartists.org/forum/showthread.php?t=156093 for a poll on the rig to be used.
You can also go back and download the previously challenges and try your hand at them until the next round starts:
http://github.com/musk/bac/downloads