The first DLC for Call of Duty: Black Ops 2 came to Xbox 360 in late-January 2013, and Activision now confirms that PlayStation 3 and PC versions will follow suit at the end of this month. The Revolution DLC pack hits those platforms on February 28, 2013, though there's no mention in the press release of Wii U release plans.
This Revolution pack is fairly full-featured as far as Call of Duty DLC goes. You get four multiplayer maps, a new Zombies map, a new Zombies versus mode that pits player-humans against player-zombies, and a new gun, the Peacekeeper SMG. It's a solid collection of stuff provided that you like to do Call of Duty things outside the campaign.