User blog comment:Bovell/Treyarch begins staffing for next project. MW3 announcement next month./@comment-204.112.133.99-20110330044630/@comment-2137624-20110330073422

Doesn't mean it needs to be improved. Comparing it to some other games like Deadly Premonition which surprised me because it has the graphics of a PS1 game yet it was released on Xbox 360. IW 4.0 also has good lighting and everything that a good engine needs. I'd say it's a good competitor to UE3 and ID Tech 4.