AMD has officially stated that the Ryzen 9 3950X desktop processor and the next generation of Ryzen Threadripper chips will be launched in November. Although some will be disappointed about the delay of the 16-core Matisse CPU, others will be excited about the confirmation of the HEDT chips, which start with 24-core SKUs.
https://www.notebookcheck.net/AMD-will-release-the-16-core-Ryzen-9-3950X-and-first-24-core-Ryzen-3000-Threadripper-processors-in-November.435110.0.html