The Black Ops series is easily the most popular sub-franchise in the Call Of Duty catalog, so it makes sense for Treyarch and Activision to tap into that well for a fourth straight time. This doesn't mean that developer Treyarch is resting on their laurels, though.
This year, it's Treyarch's turn - and a few pieces of information are already pointing to the game's existence.
The original reports come from self-styled industry insider Marcus Sellars - whose track record is patchy at best when it comes to leaks, with parts of the leak being verified by Eurogamer.
While it looks legitimate, as always, consider anything that isn't an official confirmation from Activision a rumor.
The publisher is now trialling a version of the survival mode in Call of Duty: Online, the free-to-play PC title exclusive to China.
That player's objective would be to infect all the other players by killing them. Even have a hunch that, like, once the new card is cool and it is a war, then Call of Duty 2018 will be devoted to the cold war period. One player is chosen to be the infected, and his goal is to infect other players by downing them.