The expansion pack comes out on March 21, first on PS4, with Xbox One and PC getting the expansion at a later date. Call of Duty DLC launches first on PlayStation as part of a timed-exclusivity deal between Activision and Sony.
The four maps are Broadcast, Chinatown, Creek, and Killhouse; click through the images in the gallery above to get a closer look at all of them. Full descriptions are available on Activison's blog. The new Variety Map Pack sells for $15 and also comes with 10 "Rare" supply drops, which contain cosmetic items. These are normally unlocked through gameplay or by spending real money.