Microsoft has announced that Peter Moore, Vice President of their Interactive Entertainment Business, Entertainment and Devices Division, has resigned from the company. Moore has decided to move his family back to California for "personal reasons" and has secured a new position in the games industry (rumored by 1UP to be EA Sports). He is to be replaced by former EA head, Don Mattrick, who joined Microsoft in February as a "strategic advisor." Mattrick will assume his new role at Microsoft beginning July 30.
Joystiq has a call scheduled with Microsoft later today. Keep your eye on their front page for more updates as they become available.
Update: Major Nelson has confirmed that Peter Moore will become the new president of EA's sports division.