Soldato
https://www.3dcenter.org/news/amd-nvidia-grafikchip-roadmap-201718
3DCenter updated GPU 2017-2018 roadmap has specs on Vega 20, Vega 10 and Vega 11 GPUs as well as Volta GPUs.
Vega 11 measured 350mm2 is smaller than Vega 10. Don't know why people came up with crazy theory about Vega 11 is bigger than Vega 10.
Poor Vega and poor Navi mean monster Volta Titan and 2080 Ti will have no competitors for about 2 years, look like RTG is about 5 or 10 years lagging behind Nvidia on R&D and Nvidia is far ahead of RTG. When Navi come out in H2 2019 and Nvidia will unveiled successor that will be twice faster than Volta on performance per watt.