There was a short interview of J. Allard, CEO of Microsoft, on Fox 6 the other day. They have 20 games online now and 20 more are planned by the year end.

At the company site, there is also detailed information on available jobs. For example, Software Design Engineer-SLC Games [developing games for the XBox] qualifications include strong math/physics background, strong C/ C++coding skills, good understanding of object-oriented architecture, 2+ years C++ coding experience, Direct X/3d Graphics programming a plus, etc.