UPDATE: Poster for the DLC leaked
Youtuber MrDalekJD (Youtube, Twitter) has recently found data in a new update the official Black Ops 2 website. The update added a new section for a new tab in the navigation bar at the top, however the more interesting info was hidden in the page source.
The page source showed a new button for the navigation bar that said:
background: #000 url('/content/dam/atvi/callofduty/blackops2/cod-bo2/dlc/dlc2-uprising-bg.jpg') center top no-repeat;
This suggests that the new DLC is entitled "UPRISING". Another user ImChuckyFTW then dug deeper and found information on an upcoming XBL premium theme for the DLC. The description for the theme said:
This suggests that two of the new maps in the DLC will be called Studio and Vertigo. It's interesting to note that Vertigo was a cut map from MW2.
This also suggests that the new zombies map is called Mob of the Dead. Could this be a sequel to BO1's Call of the Dead?
Thanks again to MrDalekJD for this info!