The Call of Duty: Black Ops Escalation DLC will include five all-new maps, including four multiplayer maps and a Zombies mode with all-new characters.
The four multiplayer maps include Hotel, Convoy, Zoo, and Stockpile.
In addition, a Double XP Weekend will take place between June 10 and June 12.
First Strike includes four all-new multiplayer maps, including Berlin Wall, Discovery Stadium, and Kownloon.
In addition, the DLC includes a new Zombie map called Ascension.
Activision Blizzard in Dec. said Call of Duty: Black Ops has generated $1 billion in sales worldwide.
Activision Blizzard in Nov. will sell Call of Duty: Modern Warfare 3, the next installment in the franchise.