A new map has been released for Nazi Zombie.http://www.callofduty.com/intel/189
"Verrückt (Zombie Asylum)
The fan favorite 4-player co-op Nazi Zombies Bonus Mode returns with "Verrückt," a terrifying Zombie asylum featuring more weapons, perks via the addition of Perks-a-Cola machines, electroshock defenses and the endless zombie horde.
The team has been very quiet regarding details of our DLC until now, and we're so excited to let this content loose. DLC Map Pack #1 is due out in March of '09 for the Xbox 360, Playstation 3, and PC platforms. More details are soon to come, so be sure to check out CallOfDuty.com for all the latest news and updates regarding CoD:WaW!" - callofduty.com