Gears of War 3 is scheduled for release on September 20, 2011 and will be sold only for the Xbox 360. But it isn’t as if we have to wait till then to get a sneak peak of Epic Games latest and final game in the Gears of War series. The E3 2011 conference gives us an awesome opportunity to preview some of the hottest upcoming games and Gears of War 3 makes that list. So without any further delay we bring you the Gears of War 3 World Premiere trailer that debuted at the E3 2011 conference. Check it out below.