Yeah, about that...
Did you guys see this interview with Chet Faliszek about CS: GO?
http://www.gametrailers.com/video/e3-2012-counter-strike-global/731333
Not really interesting, except for a little detail.
Close to the end (min 3:00) Geoff sounds like he's alluding about something else in the work he knows about, which given his past close relationship with Valve isn't unlikely at all.
Keighley has to be knee-deep in The Final Hours of Half-Life 3 at this point.