As with the first pack, the download will deliver a total of four new maps, with three--Banzai, Corrosion, Sub Pens--for traditional competitive multiplayer and the fourth, "Shi No Numa (Zombie Swamp)," expanding the cooperative Nazi Zombie mode.

The add-on will also bring ten new Xbox 360 Achievements and PlayStation 3 Trophies.

Pricing and the possibility of a PC release were not mentioned. The first map pack sold for $10 on consoles, and arrived as a free download for PC players weeks later.

Activision's brief, though informative, descriptions of the new maps follows:

Online, players will compete in "Banzai," and fight for control of a tall, river bridge, deep within enemy territory; face down foes in a shattered Russian train yard in "Corrosion"; and struggle to control a bombed-out submarine base in the close-quarter map, "Sub Pens." In "Shi No Numa" (Zombie Swamp), Imperial Zombies rise from misty swamps in an all new co-op experience, with a level that features a mix of traps, flaming Hell Hounds, Perk machines and the deadly, new Wunderwaffe DG-2, as well as 10 new Xbox 360 Achievements/PS3 Trophies that can be earned along the way.