AMD Ryzen 5000 Zen 3 support is rolling out for ASUS, ASRock, Biostar, Gigabyte and MSI 500 series motherboards; no B450 or X470 support until January 2021 at the earliest
Some manufacturers have published new BIOSes with Ryzen 5000 support for AMD 500 series motherboards. Most of the new BIOSes include the AGESA v2 1.0.8.x firmware, which AMD has decreed is necessary to 'get ready' for the Ryzen 5000 series. So far, ASUS, ASRock, Biostar and Gigabyte have released BIOSes containing AGESA v2 1.0.8.x firmware for motherboards based on the A520, B550 and X570 chipsets.
However, MSI has gone one better and bundled AGESA v2 1.1.0.x firmware, which should deliver the 'best experience' for AMD 500 series chipsets paired with Ryzen 5000 processors. The AGESA v2 1.1.0.x firmware should be available from other motherboard manufacturers closer to November 5.
AMD 400 series chipsets will also receive support for Ryzen 5000 series, as we reported earlier this year. AMD claims that motherboard partners are currently developing BIOS updates for 400 chipsets, with beta releases scheduled for January 2021.