Not only is it months after Gears of War 3's September release, but it's also after the holidays. Apparently, Microsoft felt this was the perfect time to release a Gears of War 3 demo on the Xbox Live Marketplace, as that is exactly what they did. The demo consists of the "Shipwreck" mission from the game's second act, and also features a lot of bullets flying by. Thinking back on it, the release of this demo is the perfect way to gear customers up for the massive presidential sales in the coming months. I'm sure that was the thought process behind it.