May I ask why people are optimistic that AMD is able to come up with an overwhelming (or at the very least not underwhelming) console CPU next time? Seriously asking, I really have no idea if AMD offers more bangs for the buck nowadays.
Ryzen cpu's using Zen architecture have shaken up the CPU landscape, so much intel felt pressure and put out a product that was half baked.
Six Core/8 core are now coming out that are very affordable and have good IPC for gaming.
So if and when AMD develops their APU line with zen architecture it could mean great things for consoles. Especially if the Ryzen cpu's for laptops turn out great that will be a good indicator for what they could be looking at for consoles.
Way more powerful, less TDP, and easily scalable makes them a good choice if they can make a chip that will fullfill both needs on cpu/GPU.
Separate chips are according to some gone for console setups, all on one dye is where they would be looking, because of heat/voltage and space.
What we have to wait for is Zen APU's to start showing up and getting tested on games to at least get a basic understanding of their compute ability in a gaming environment.