MSI promises its AMD X470 and B450 motherboards will support Ryzen 5000 (Zen3) series - VideoCardz.com
ASUS Announces UEFI BIOS Support for AMD Ryzen 7 5800X3D and new AMD Ryzen 5000 Series and 4000 Series CPUs for ASUS AM4 X570, B550, X470, B450, X370, motherboards* 83 motherboards listed
ASUS drops support for Ryzen 5000 processor series on X470 motherboards - NotebookCheck.net News
Do B450/X470 Mobo Support AMD Zen 3 5000 Series CPUs?
AMD B450 or B550 Motherboard for Ryzen 5000 CPUs? - TVfil78 - News