Well now they are talking about it and suggesting a spec.
Nikon Z9 is expected in the fall of 2021
No official plans for a Nikon Z8 camera yet
Prototype Z9 cameras may be tested at the Tokyo Olympics next year
New Nikkor Z 400mm f/2.8 mirrorless lens is also rumored for the Olympics
The Z9 is described as a D6 body combined with EOS R5 imaging, α9II AF, and blackout-free EVF
46MP (previous rumors suggested a 60MP sensor)
New EXPEED processor designed for 8k
Improved AF (Object detection AF)
Two XQD/CFX type B memory card slots
ISO 64 – 25,600, Hi1, Hi2
High resolution, blackout-free EVF
New user interface (no second LCD screen on the back like he D6)
New battery: Nikon EN-EL18x
Gbit LAN, USB-C, WiFi, GPS
Price: $6,000 – $7,000
Interesting they say 45MP which says two things to me ..
Buy a Z7ii at 45 MP because waiting for 60MP ain't going to happen.
Z8 will be the 60 MP but we will wait to sell all the Z7 ii we can first