On Monday, gaming site Major Nelson wrote that Activision has revealed it will launch the next expansion pack for Call of Duty: Black Ops for Xbox 360 on May 3rd. Dubbed “Escalation,” the new downloadable content, for Xbox LIVE subscribers, will sport five new maps, including four that can be played in multiplayer mode. New maps include “Hotel,” where you’ll battle on the roof of a Cuban hotel and casino, a Russian “Zoo,” a WMD “Stockpile”, and “Convoy.” And what’s an update without some more zombies? Escalation will reportedly offer a new “Zombie experience,” with new playable characters. It’s unclear how much Escalation will cost.