IGN: "You'd have to be insane not to anticipate a Call of Duty presence at today's Microsoft briefing. Last week, IGN had the chance to get a preview of today's announcement and talk with the developers at Infinity Ward. The team promises the next iteration of Call of Duty will deliver a new experience, a new world, and a new engine. We're still waiting on firmer details of the story, but we do know that America is crippled by an attack, and that the player is part of an elite force sent to respond to the threat. The game's story is being written by Stephen Gaghan, the writer of Traffic."