The upcoming Modern Warfare 3 is being developed by Infinity Ward. Or, at least, what's left of it. The Wii version, however, is being developed by somebody else, somebody just as familiar with the series, if not quite as popular with its fans.
That developer is Treyarch, the team behind Call of Duty 3, World at War and Black Ops. If you're wondering why some of their team is "stuck" on the Wii port, well, they've got a ton of experience on the platform, having handled the Nintendo home console versions of World at War, Modern Warfare and Black Ops, as well as having turned out 2008's Spider-Man: Web of Shadows on the Wii.
Modern Warfare 3 is due not only on Wii but PS3, 360 and PC. A Call of Duty was also announced for Vita, but we don't know yet if it will be MW3. Most of those versions, Vita excepted, should be out in November.
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