Not the sequel, but the first game in the Modern Warfare series.
Kotaku reports that Activision will release Call of Duty: Modern Warfare for Wii on November 10, coinciding with the release of the sequel for Xbox 360, PS3 and PC.
In the hands of World at War developer Treyarch, the game will be a direct port of the previously released PC and console FPS. Treyarch did a pretty decent job of bringing its WWII shooter to Wii so we expect Modern Warfare to hold up pretty well.
The Wii version of World at War also offered one of the console's best online multiplayer experiences, so we expect the same to apply to Modern Warfare.