Guilty Pleasure

^Big Boss/Snake clones :D

The game takes place in the year 1974, in Costa Rica, after MGS3 .
Hideo Kojima himself said he will be heavily involved in the game's development; from scripting to producing and directing.
So you can expect another awesome installment into the MGS saga.

MGS: Peace Walker trailer



Judging from the trailer and the fact that its on the PSP
plus scenes and that screenshot (top) showing 4 Snake clones
im 99.9% sure that the game will feature a multiplayer mode or something alike.
Hopefully, it does...
So far, MGS has been a 1 player game, with exceptions to MGO (Online)
where you dont play as Snake and with no storyline