BengaBenga on 05 April 2009
There are several developers that have already confirmed a wii version. Even on VGC, so I don't really know why this is still a question.
The main "rumor" is that IW is forced by Activision to make a Wii version as well, but it could also be outsourced to Treyarch, that made the excellent WaW Wii version.
