Shangri-La is part of the annihilation map pack for Call of Duty Black Ops and the Xbox 360 release is June 28 2011, PS3 and PC have been coming out 30 days after the Xbox 360 release
From the related link the next Zombie Map for the Call of Duty Black Ops map pack 2 Escalation will be to Survive Call of The Dead
Call of The Dead
it's when you come back from the dead on the next round
The next map pack Annihilation has the zombie map Shangri-La and the last is Rezurrection with the zombie map Moon and you also get the 4 WAW zombie maps as a separate download for Rezurrection besides getting Moon and 4 multiplayer maps.
Ascension or call of the dead
Left 4 dead, Left 4 dead 2. Zombie apocalypse on the xbox arcade. Call of duty black ops and world at war has a zombie mode. Red dead redemption has a zombie add-on for multilayer and single player
Nathan Abercrombie Accidental Zombie: Dead Guy Spy
There are no more zombie Nazi's after you beat the last one in call of duty 5. Next, you will face a whole new batch of competitors in call of duty 5.
The best zombie map on black ops is the Call of the Dead but really its your personal opinion
the biggest zombie map that is out right now is proabably moon or call of the dead
The next Zombies map will be: Call of the Dead. Rezurrection DLC will include the 4 WAW maps Nacht der Untoten, Verrückt, Shi No Numa, & Der Riese along with 5 new maps including zombie map Moon and is the 4th DLC
There is a new map pack coming out and it'is call Escalation. I forgot when its coming out but its coming somewhere in May. The new zombie map is called Call of the dead.