In case there are still any doubts about what will be announced on Wednesday – the Nikon Z8 camera is already registered with the Korean Aradio Research Agency (the registration date is May 2nd):
So yeah… no Z6 III or Z7 III 🙂
Previous Nikon Z8 leaks and rumors can be found here.
Also: join the new Nikon Z8 Facebook group with almost 10k members.