A reddit user recently found a new game mode within Ghosts' game files under the name "Reinforce".
The game mode is described as a "hybrid between Domination and Search and Destroy". Reviving allies requires capturing the flags rather than picking up dropped tags. A round is won by either eliminating all players on the opposing team or by capturing all 3 flags.
It is currently not known when or if the game mode will be released nor what systems will be recieving it. You can read the article by clicking the image above or by clicking here.