The Official Call of Duty Website has Confirmed that the next Call of Duty is indeed Black Ops 2, as if that was a big surprise to anybody.
The biggest difference so far is that while the first Black Ops took place during the Cold War, This one will take place in the near future. This will most likely means, new tech weapons and possibly abilities introduced in the franchise, just like the image above suggests.
The reveal was originally going to take place during the NBA playoffs, but the debut trailer is still scheduled to be released at that time. Right now the reveal is blocked off to the public but here are some screens of the new game.
I wonder if you can play as Obama. Probably not because it would make the game to easy since he singlehandedly took out Osama Bin Laden.