Microsoft announced today that it will reveal more details about Project Natal to developers at Gamefest in February. Microsoft will be discussing two aspects of the motion sensing controller.
One focusing on designing games for the peripheral while another gets into the technical aspects of it, such as advice on gesture recognition, avatar re-targeting, speech recognition, etc.
Rumors have slipped to expect at November release date but, as always Microsoft denied these rumors. It is expected to retail between $50 and $80.