They talked with a program manager at GM about the launch date. The current expectation is mid-November 2010 for initial launch, with larger scale production in 2011.
I've dealt with Program Managers and when they say something like "There is a target date. In this program, every hour is scheduled." it means they have some kind of gantt chart or equivalent project schedule system where all the steps are lined up in a neat chart, and that the days required for each step add up to next November. It's likely they have a target of some large auto show e.g. IIRC the Los Angeles Auto Show is about then. The San Francisco Auto Show is in late November but somehow I think that's not as juicy a target for them as one in Los Angeles ;-)