taken straight from a thread at gametrailers.com and I did not see anything posted here, but here is the source 

And Kojima has a countdown... Metal Gear Solid 4: Subsistence!

Gofanboy has been posted on this forum quite often. I haven't seen anything they've said come true. They seem to write whatever they want for hits...

I'm going to laugh when this isn't MGS4.

today is the first time that i have every come into contact with them. Guess we will see if this another one of their failed predictions

I am going to laugh if it is, because its an old game and it has taken this long to come to the xbox 360

Like someone said before. I have never seen any of their predictions come true. So take this with a grain of salt.

It wouldn't be an exclusive.

Was in reference to this.

Probably Itagaki game or MGS Rising time exclusive