Gears of War 3 debut trailer

In one of the worst kept surprises of the year so far, last night Epic revealed Gears of War 3 on the Jimmy Fallon show in the US with a debut trailer for the game. Nothing is really revealed gameplay wise, but the trailer shows Marcus, Dom and other Gears running across a battlefield strewn with dead, petrified people whilst being pursued by the Locust. Also...