Jesus christ, this topic again?
I think Kojima has made it pretty damn clear he want's it to too stay on Playstation 3, or else it would be on 360 already.
And plus, neogaf, no thanks.
Rumor, most likely fake.
Edit: Gamefork? ROFL I've never even heard of them. I also want to add, there's not even a website for gamefork.. This rumor comes off twitter, which could be created by ANYONE. I could go create a twitter page with "Game__" And say Sony's lineup is halo 4, people would believe it.. Plus the twitter page is 4 days old, probably some N4G kid thriving for attention. I wouldn't believe this for a second.