Nothing new, nothing special.
The biggest let down is the single player modes duration. I finished the game on the hardest difficulty in under 5 hours.... seriously... $100 for less than 5 hours.... I certainly made up for the lack of content in single player by thrashing out 50+ hours in multi-player but that is not why I buy the COD games.
A short but great story, great graphics and standard multiplayer feature.
Grab it if it's on special, don't pay full price or you will kick yourself for it.