Looks like they're using the same MGS2 engine, I'm down with that as long as they improve the level design and don't give us another Raiden! Lookin' pretty sweet but I remember lookin' at MGS2 trailers saying how awesome they were only to have Kojima cheat me by making me play a game practically missing the character I wanted to play as.
Oh well, I'll probably still get MGS3, but only if the above conditions have been met!