AMD can't get enough Radeon RX Vega cards into gamers' hands, or any Vega 10 GPUs into AIB partner hands at all, but we're already looking to the future with Vega 20 and the upcoming shift to the 12nm FinFET process.
AMD has confirmed it will be moving to the 12nm FinFET process for both Ryzen and Vega parts, withi the upcoming Zen+ parts to launch in the second half of 2018. We should expect naming systems like Ryzen 7 1850X (up from 1800X), and changes to Threadripper.
But for the new Vega 20 GPU, we should see it pushed onto 12nm FinFET with "more than 10% improvement in performance over industry 16nm FinFET solutions", with "up to 15% improvement in circuit density".
All I can say is that we're going to need it if AMD wants to push into a single GPU product that is capable of 4K 60FPS, let alone the GPU horsepower required for 8K 60FPS.