Late last night, what seems to be a tech demo featuring a brumak from Gears of War turned up on the Internet. It's probably a showcase of the next version of the Unreal-engine, that's going to be used in Gears of War 3. As I write this, the clip is still up on YouTube, but these kind of things usually disappear pretty fast - if it is a leak, and not deliberately put there.
Kotaku has also put up a couple of pictures that Epic showed at GDC last week, that shows off a new vegetation system in Unreal. Could it be that Epic is planning to have some actual green color in Gears of War 3, and not only brown with splashed of black and grey? The mind boggles.