I had some similar problems after updating today, with the addition of display freezes. I have configs for pipewire and wireplumber in ~/.config, but they were unchanged.
I restored a pre-update btrfs snapshot, deleted the config files in ~/.config, did the update again and rebooted. Now everything works, also after copying the config files from /usr/share/pipewire and /usr/share/wireplumber to ~/.config/pipewire and ~/.config/wireplumber again.
That could be a first try, if you have your audio config files in your Home directory.