Never mind. It was added in the first Open Beta for 7T and 7T Pro
It would be very nice to activate both features at the same time.
Of course for all supported OnePlus'es.
Currently, it is impossible to turn on the phone waking up by double tapping and one top for Ambient Screen...
Yeah, because I can.
Still waiting for the 10.0.7 update on my OnePlus 7T Pro.