Still the same set of problems as before - amdgpu on X is a no-go.
Good thing, however, that it works totally fine with wsfb
fallback (if you specify it in xorg.conf). No acceleration, sure, also Firefox doesn't start, but Gnome Web works fine, so I can live with this for the time being. Thanks to DRM-updates, at least now I've got GPU fan being silent and not spinning with 100% speed all the time.