User blog comment:Bovell/Kotaku claims to have MW3's first look. Robert Bowling responds. (Minor spoilers)/@comment-4128371-20110513170659/@comment-1889554-20110513194702

They probably haven't finalized the graphics.

If I were a game developer, I would get all the main gameplay done, then work on polishing off the graphics with two or three months to go. (assuming that's the apporoximate time they can do that)