AMD released 20.8.2 driver. I checked it - PM support it. OpenCL still from 20.7.1.
So 20.8.2 can be installed without any difference with 20.7.1 drivers.
i would stick to 20.4.2 drivers for a while.. (very very very stable)
I tried different Radeon driver version for Phoenix 5.0e for my RX 570 4G but non of them are compatible, they've give my rig an error, as of now the 20.4.2 version is very stable for my cards, I already tried the old blockchain driver and it's the same, it gives an error and crash to my rig.