We?re titling this as a rumor, but even so, sources have revealed to Game Informer Online that there will be a Halo 3 demo released over Xbox Live in the first half of 2007. Obviously Microsoft hasn?t revealed any details yet, but we wouldn?t be too surprised if something was dropped in the second or third week of November. You know, just to mess a bit with the PlayStation 3 and Wii launches.