The download will bring four new multiplayer maps Treyarch's World War II shooter, taking players into "the streets of a war-ravaged Berlin in 'Nightfire,' deep into deadly jungles to attack fortified Japanese positions in 'Knee Deep' and through a bombed out underground subway system in 'Station.'"

The fourth map, "Verruckt (Zombie Asylum)," will expand the four-player survival mode against Nazi Zombies, supplying more weapons and new Perks-a-Cola machines.

No mention of pricing was made in today's announcement.