It looks like some of the OpenPilot team didn't like some of the goings on inside the group. Some have split off and are now doing a new project called "Tau Labs". Source: http://buildandcrash.blogspot.com/2013/01/tau-labs-kicking-along.html
I've already installed their version of the GCS and it installed well on Ubuntu 12.04 LTS 64bit and looks good. I suspect that it works with my OpenPilot CopterControl board, but have not yet tried it.