MSI has started distributing optimized BIOS updates for the X570, B550 and A520 series motherboards. Combo PI V2 1.0.8.1 BIOS are released and able to download successively from now throughout September.
The MSI news-release is very shot but the new BIOS updates affects the following:
Optimized memory compatibility
Optimized overclocking ability of memory
Mitigate S3 resume issue
Solved RAID issue of B550 platform
Now supports UMA setting for Ryzen 4000 G-Series (Renoir) processors
The release schedule is listed below, BIOS for all 500 series motherboards will be ready in September.