"A new patch for PC players is now live on Ghosts, and this patch finally adds Onslaught DLC maps to regular rotation, which means you can play these maps in all playlists if you have the DLC. The new patch has also added DropZone game mode back to Call of Duty: Ghosts. This mode was rumored a little while ago, and with the newest patch is now available. Drop Zone was originally introduced in Call of Duty: MW3 as a community mode that revolves around Care Packages." The patch is apparently being released at the moment for other platforms as well, xbox 360 already got the patch as well. Source here
I played it once or twice during my 5 hours total of MW3, it's indeed the land of snipers Too bad they had to replaced hunted with this