Drop Zone was a community-made game mode that became very popular back in Call of Duty: Modern Warfare 3. Initially, Activision decided to remove this game mode but, finally, Infinity Ward reintroduced Drop Zone for CoD: Modern Warfare 3 players.
Here you can see some images of Drop Zone game mode in CoD: Ghosts:
As usual, this info is not official yet. Stay tuned.
Source | Reddit
Via | MP1st