As an aside, I noticed Asrock have launched the page for thier Asrock X570 Taichi
The other Taichi's were often considered one of the best Ryzen boards so I'll just leave this here:
https://www.asrock.com/mb/AMD/X570 Taichi/
Thats some nice RAM OC support. It'll be interesting to see what you can get to with 4 DIMM banks loaded.
I want 32GB RAM again, but finding decent 2x16 kits for Ryzen is a pain; hopefully it's better on x570,