poklane said:

I just wonder what setting it is. I know that Marcus Sellars said it's modern but I just don't see how that could fit in the already established storyline, and Eurogamer only seems to be saying that they've heard it's BO4, they're not confirming our denying anything else. Personally I'm really hoping we'll get a Korean War game or a game which explains where Alex Mason was after Woods "killed him" (providing that ending is canon).

Black Ops 3 didn't really fit into the story. I expect Bo4 to take place right after Black Ops 2.