MSI are ready to support Ryzen 5000/4000 series processors for AMD 500, 400, and 300-series Motherboards
AMD Ryzen 4000 "Vermeer" could launch in September - VideoCardz.com
ASUS Announces UEFI BIOS Support & AGESA 1.2.0.6b for AMD Ryzen 7 5800X3D & new AMD Ryzen 5000, 4000 Series CPUs for ASUS AM4 X570, B550, X470, B450, X370, B350, A520, and
The AMD Ryzen 4000 will finally arrive under the name Ryzen 5000 : r/Amd
Possible AMD Ryzen PRO 4000G Series SEP Prices Surface, Incompatible with 400-series Chipset | TechPowerUp
AMD reverses course, will support Ryzen 5000 in old B350 and X370 motherboards | Ars Technica