"To kick off Escalation's release, we're opening up another Double XP Weekend across all systems," developer Treyarch said.
"Additionally, in celebration of the Call of Duty: Black Ops Facebook page reaching 10 million fans, we'd like to show our thanks to everyone supporting us along the way by expanding the event's usual timeframe."
"Starting this Friday the 6th at 10am PDT, and extending to Tuesday the 10th at 10am PDT, you'll have plenty of time to rake in all the XP you could dream of. Whatever your goal, you've got 4 whole days to get there with twice the speed!"
The Escalation add-on hit Xbox Live earlier this week featuring four new multiplayer maps and a brand new Zombies level with all new playable characters.