RDNA 3 graphics cards are planned for 2021, AMD are supposedly using a chiplet design. I kind of think they will need multi GPU designs just to beat the 3080/3090! Or maybe Ti versions of both these GPUs by 2020 2h.
I wonder why they dont wanna say RDNA 3 will use 5nm lithography? Maybe they think they can get enough transistor density from 7nm?
It is going to be awhile until we see non-monolithic designs making waves in the gaming space unless developers can be persuaded to embrace explicit multi-adaptor techniques and even then that isn't a complete solution and any time you see people talk about AMD GPU chiplet designs while comparing them as "similar" to what they did with Zen it is a fairly good indicator they don't have a clue what they are talking about - you just can't bring that to a gaming workload like you can other types of compute (without employing things like explicit multi-adaptor at game implementation level).
EDIT: Any future moves this way would likely be MCM rather than strictly chiplet nature - possibly with a mixture of big and small cores and/or a mixture of headless packages and command packages to more dynamically allocate resources to a workload.