An official slide from AMD sneaked into the official AMD Ryzen Pro mobility APU presentation, revealing that the company is currently sampling the second generation of Threadripper HEDT CPUs. These are build using the Zen+ 12 nm process, and will bring improved memory latencies together with higher default and boost clocks.
https://www.notebookcheck.net/AMD-is-already-sampling-the-Threadripper-2000-series.303482.0.html