https://www.techpowerup.com/321868/biostar-announces-socket-am5-motherboard-bios-updates-to-support-next-gen-cpus
 
BIOSTAR, a leading manufacturer of motherboards, graphics cards, and storage devices, today is excited to announce a brand-new BIOS update designed for its AMD AM5 series motherboards, incorporating the latest AGESA PI 1.1.7.0 Patch A architecture. This update is aimed at the imminent release of AMD's next-generation CPUs, ensuring that BIOSTAR motherboards are primed to unleash the full potential of these cutting-edge processors. With a strong focus on future-ready performance, this BIOS update will be available to download soon and is ready to redefine computing power and performance with the latest AMD processors. BIOSTAR invites users to stay tuned to its official website for the BIOS release and future updates.
 
Looks like all the major AMD motherboard manufacturers have their AGESA updates ready or soon will be.