Well, here's something new and unexpected. It seems AMD is prepping a Ryzen Threadripper PRO 3995WX Processor with 64-cores/128 threads and wait for it ... 8-channel DDR4 memory support.
A photo of the product surfaced on the Chiphell forums, but shortly after that was removed. As a pro series the processor is needs to compete with Xeon W series processors in that SOHO environment. The big news is that the Asia website reported the 3995WX is an offering 8-channel DDR4 memory interface, up to 2 TB of it The Ryzen Threadripper PRO series might see the light of day as soon as next week, July 14, 2020.