it is confirmed for wii. the proof is that on the pre order form its says ps3 pc xbox 360 xbox 360 live and WII!!!!
FatMario: check out this thread: http://www.wiichat.com/nintendo-wii-gaming/61223-cod-mw2-not-coming-wii.html
It is NOT coming to wii as was confirmed in this interview by the makers of the game. This is why its not on the call of duty website either. MW1 was not on wii and MW2 will not be either. It sucks that its not and it doesnt make sense not to do it but its definitely not.