Activision and co. announced that there will be a week-long Double XP event from October 25th, to November 1st, in anticipation of Call of Duty Ghosts launch:

You'd better rank up to 10th prestige in BO2, because this is what you'll get:

This is your unlocked Background, and a calling card will be added to your list of calling cards in CODGhosts.

You'd better rank up to 10th prestige in BO2, because this is what you'll get:

This is your unlocked Background, and a calling card will be added to your list of calling cards in CODGhosts.