Black Ops Escalation pack launches on Xbox Live

Treyarch's confirmed that the second map pack for Call of Duty: Black Ops, Escalation, has launched on Xbox Live.

Said community boss Josh Olin in a tweet: "That's it folks. Downloading #Escalation right now on my Xbox 360. It may take time to hit your territory, but... It's here!"

The pack weighs in at just under a gig - 986.42Mb, to be exact. It's now available from the console marketplace as well as Xbox.com. You can queue it up here.

The Escalation pack includes four new maps - Hotel, Convoy, Zoo and Stockpile - as well as zombie environment Call of the Dead.

The DLC launches first on Xbox Live as part of a three-year agreement on all Call of Duty DLC between Activision and Microsoft.