Well hopefully they give us a Vega 2 with all this money that can match 2080 Ti... I really want to go back to AMD someday, but I need high performance... so
I sincerely hope they are not planing to stick to compute optimized architecture on the gaming front, as it certainly didn't work in the past couple of years.
You just simply can't have "energy efficient" gaming cards that are also good in general computing and for machine / deep learning on top of that. Riding two horses with one arse is difficult enough, but riding 3 is outright impossible.
There is simply no reason waste a lot transistors, power and silicon. Having 25% of the chip sitting idle under gaming conditions is just a waste. I honestly hope they streamline GCN for gaming and have a separate professional line this time next year.
Adjusted for manufacturing if both were made on GloFo 14nm FF:
Polaris 10 - 232 mm2
GP106 - 184 mm2
That is around 26% less die area with some flawed math in the mix, so make it 20% for arguments sake. But that is still A LOT, while they are basically the same performance wise.