I still have a few more play-throughs of single player to go...but I did logon and was happy that some new maps were added...2, I believe...and a few more modes to play in. Can't wait to check out more of it.
The only thing I noticed running around the new levels is that the running speed seems to be faster. Not sure how I feel about that, but that's probably good for me considering I like CQC/knives.