It's been made clear that we will get at least 10 years of cross-platform availability for COD, so we're safe for a good while yet, and the game should come out on PS5, PS4, Xbox Series X/S, Xbox One and PC.
If you take a look at the Modern Warfare 3 pre-order information, you'll see that both the PlayStation and Xbox versions of the game are marked as "cross-gen edition" meaning that you'll not only be able to play them on last-gen consoles, but you'll also have access to the latest version at no additional cost if and ...