Here is another video review of the new Nikon Z6 (B&H/Adorama/Amazon) full frame mirrorless camera by Tony Northrup. He compared image quality of Nikon Z6 with Nikon Z7, Canon EOS R, Sony a7 III full frame mirrorless cameras. You can watch the video above to see detail.
LensVid has interview with Mr. Dirk Jasper from Nikon Europe, talking about new Nikon Z mirrorless cameras. From the interview, Mr. Dirk Jasper said Nikon Z7(B&H/Adorama/Amazon) has better dynamic range and better continuous shooting than Nikon D850. Mr. Dirk Jasper also said that Nikon will continue to release F-mount lenses for the foreseeable future, but mirrorless cameras will become more dominant than DSLRs (even for professionals).