This site has a ton of great information on the new features in Black Ops 2. The guns look really awesome, even tho now they seem to be moving on to a futuristic type of look, almost Earthworm Jim space blaster type of styling. http://www.blackopsii.com/bo2/weapons-list/ But the list of weapons is nice, plus they aren’t all just the same guns from MW3.
The maps section http://www.blackopsii.com/bo2/multiplayer-maps/ doesn’t have a ton of info on them yet but there’s a few that have a nice bird’s eye view. Being able to see the perks, and the weapons and the scorestreaks really does help to give you a bit of a boost once it finally drops as you can plan out what will work best for you with your style of play.
Be sure to check out http://www.blackopsii.com/ for more information.