User blog comment:Bovell/Kotaku claims to have MW3's first look. Robert Bowling responds. (Minor spoilers)/@comment-1416547-20110513233656

The screenshots of Carbon and all of the weapon model screenshots use CoD4 and MW2 textures and models, so that gives them some degree of credibility. The models seem to be too high-quality for an amateur modeler to have created them, and the maps seem to be of higher quality than most custom CoD4 maps I've seen, so I think it's safe to say a lot of the stuff in the article is legitimate.