Following its release in March for PlayStation 4, the Variety Map Pack is now available for Call of Duty: Modern Warfare Remastered on Xbox One and PC (via CharlieIntel). If that name sounds familiar, it's because the Variety Map Pack was released in 2008 for Call of Duty 4: Modern Warfare. It adds the same four maps from that expansion, Broadcast, Chinatown, Creek, and Killhouse, but with updated graphics.
The expansion costs $15. It also comes with 10 "Rare" supply drops, which contain cosmetic items. These are normally unlocked through gameplay or by spending real money.
All Call of Duty DLC now launches first on PlayStation as part of a timed-exclusivity deal between Activision and Sony.
Modern Warfare Remastered is only available through Call of Duty: Infinite Warfare's Legacy Edition. The package launched at $80, but you can find it for a lot less right now. It remains to be seen if Activision will ever release Modern Warfare Remastered on its own.