A GameStop advertisement has revealed that the first Call of Duty: Black Ops II map pack, titled "Revolution", is coming out January 29th 2013 on Xbox Live.
The map pack will contain 4 multiplayer maps: HYDRO, GRIND, DOWNHILL and MIRAGE. A zombie map called DIE RISE and for the first time in a CoD game a bonus weapon called the PEACEKEEPER SMG.
Note: The DLC HAS been released, and is available on the in-game store.