http://www.gamespot.com/xbox360/strategy/halowars/index.html?q=Halo%20Wars
I read up on it and watched the video, and I'm really interested in it.
EDIT: Interesting note, Drewboy made a similar thread in...future consoles. So merge the threads, shut this one down, do whatever.
EDIT: Wings too. Make one big Halo Wars thread, put em all in there.