A demo has been released for Apache Air Assault on Xbox Live. It weighs in at around 900MB and features two missions and a training section. Sadly the game's local co-op mode of play isn't on display - where one player controls the helicopter while the other is the gunner. Apache Air Assault is from developer
I just spent a bit of time with the demo and was really impressed with the quality. The game looks really gorgeous and there's a lot of action on the screen. Plus - it'll really give your home theater a workout - plenty of bass in the explosions!