https://wccftech.com/asus-gigabyte-roll-out-amd-ryzen-5000-ryzen-7-5800x3d-cpu-support-for-x370-b350-a320-motherboards/

Gigabyte & ASUS have started rolling out their first AMD Ryzen 5000 CPU support BIOS for their X370, B350 & A320 line of motherboards.

Both ASUS & Gigabyte will be rolling out their respective X370, B350 & A320 motherboard BIOS to support the AMD Ryzen 5000 Desktop CPUs. The rest of the lineup will also be getting initial support for AMD's Ryzen 7 5800X3D which launches next month.