it's just really lame - nintendo and sony had such awfully lame announcements and press conferences at E3 following Microsoft's monster conference that Microsoft didn't want it's big game company to go ahead and unveil it's ace in the hole just incase they needed more to smash the competition, because they didn't need it, they don't want to throw it out there yet... it was really poorly handled tho, having bungie gear up to unleash the news and then squashing it... booo