Four GB is just so out of date
AMD 600-series motherboards are about to get 24GB and 48GB DDR5 memory module support with the next AGESA firmware update.
Ryzen 5 7600X is fully functional
AMD has fixed a problem with the firmware behind its Ryzen 5 7600X.
Disabling cores on Ryzen 7000 series chips
AMD has problems with its AGESA 220.127.116.11 firmware for AMD Ryzen 7000 series chips.
Better power management for smoother gaming
It appears that AMD AGESA 1002a BIOS update has started to show up for some motherboards and that it fixes power management problems seen with the Ryzen 3 2200G and Ryzen 5 2400G APUs, providing both better performance and smoother gameplay - in some games.
BIOS updates for the entire AM4 lineup
MSI has released BIOS updates for its entire AM4 motherboard lineup, bringing both support for the upcoming Raven Ridge APUs as well as providing some other improvements.
Better support for future CPUs
According to the latest report, it appears that AMD is hard at work on its new AGESA 18.104.22.168 update which should pave the way for upcoming AM4 processors, like the Raven Ridge APUs and the Pinnacle Ridge CPUs.