Microsoft just confirmed Peter Moore resigned from Microsoft.

Moore will be replaced by Don Mattrick, a former president of EA and current external adviser for Microsoft, who will now lead the Interactive Entertainment Business for Microsoft. While the official release says that Moore "has decided to move his family back to the Bay Area for personal reasons and has secured another opportunity in the video games industry", we've heard that calls have already started going out within the industry confirming that the other "opportunity" is EA where he will head up EA Sports.