GameRevolver.com squashes the rumors that MGS4 may come to the Wii.
"For some reason, a large portion of gamers don't know or remember that Metal Gear started on the NES back in 1988. It wasn't until 1998 when the series made the transition to the original Playstation under the title "Metal Gear Solid" that it began to take off as a successful series.
It is because of their past that Nintendo is able to gain ties to the MGS franchise. It is not uncommon for Nintendo to mix and match soundtracks from other games, I mean the game basically is a bunch of characters from a number of games coming together to duke it out."