”With Annihilation, Black Ops fans will get four exciting and unique multiplayer settings with Hangar 18, Drive-In, Silo and Hazard,” said Treyarch Studio Head, Mark Lamia. ”Players will also enjoy an all-new Zombies experience, Shangri-La, an exotic and mysterious map filled with deadly traps, dark secrets and innovative gameplay that will challenge even the most daring Zombie hunters.”
We should be getting more info on this; it’s unusual for Activision to announce a map pack for Call of Duty without an associated trailer or even screenshots. Perhaps the leak forced them into an early reveal.