"a Twitter user called kopite7kimi shared information that Hopper is NVIDIA’s upcoming MCM architecture"
The same user said:
"GA101 cancelled|"
So, what's the current GPU roadmap going to look like?
Pascal|Volta -> Turing -> Ampere* (??) -> Hopper
Unless they wanted an absolute killer of a generation they won't go that big. There's no need for them to even if it is within the realms of possibility.
That card is for the data centre business. If they go smaller, that means the relative performance improvement over the 815 mm^2 GV100 would be either small or very small or none.