According to wii.qj.net, there will be a new box art on the Cod:modern warfare
There's gonna be a few changes to the Wii port of Call of Duty 4: Modern Warfare, both in its name and in its boxart. The new title of the formerly Call of Duty: Modern Warfare: Reflex has now been changed to Call of Duty: Modern Warfare: Reflex Edition. Told you it was just a few.
As for the new box art:
To compare it to the old one:
CoD: MW: Reflex Edition for the Wii is coming out the same day as the launch of Modern Warfare 2, November 10th.