ok, wasn't sure what you meant with "public".
I have 3603 here.
It seems to solve the Ht >18,5 issue for Deneb CPUs. Not sure if it fixes the Thuban Multi (@ 4x) issue too since I don't have a thuban to check that right now.
I could post it if its ok. Got it from ASUS support 2 days ago

3603 would likely be a leaked beta.
Not yet... that's the point: I'm not sure if its ok to "leak" it ^^