I have said this before, that koname has said again and again that MGS4 is a exclusive
and heres the proof
Im not surprissed seeing as how 2 mods from a site made this rumar up
TheGameReviews.com had the opportunity to speak with Konamiís PR about this latest rumor, and unsurprisingly, Konami is baffled by claims that Metal Gear Solid 4 is going multiplatform. In a rush to get the word out, it seems that those who broke the story talked to everyone except Konami, who made this statement "For the record, Metal Gear Solid 4: Guns of the Patriots is a PlayStation 3 exclusive and there are no plans to develop an Xbox 360 version of the game." Nuff said..