http://wccftech.com/amd-zen-hbm-apu-spotted/
GPUless ITX 1080p capable gaming rigs are acoming, maybe.
Rumor mill. I do not trust it however if they used it as sort of an L4 cache that would be wise
We saw what better memory could do for gaming performance with regards to igpus with broadwell. To my knowledge, the first round of APUs coming out next should still be 28nm and not Zen or Arctic Islands, but the HBM alone should make the performance absolutely stellar.