Comes out September 28th for North America, September 30th for Australia, and October 1st for Europe for all platforms but Wii. Wii comes out October 3rd for all Countries. For more information on the game can be found here and here.
I am pretty excited for this. I may need to go buy a used Xbox 360. I don't think playing on the Wii will be as fun as Xbox. Plus a lot of the features aren't available for Wii.