Japanese news site Nikkan Kogyo Shimbun recently had an interview with Nikon CEO Toshikazu Umatate, they confirmed that Nikon will release a new high-end flagship Z-mount mirrorless camera which is similar as currently Nikon D5 DSLR camera (or upcoming Nikon D6). Though the release date is not available yet, maybe in 2020 to 2021.
Translated from Nikkan Kogyo Shimbun:
Nikon will introduce the top model of mirrorless camera. Although the time is not public, President Kazukazu Madate clarified according to coverage of the Nikkan Kogyo Shimbun. Top model “D5 of digital single-lens reflex camera …
This high-end Z-mount mirrorless camera could be named Nikon Z8 or Nikon Z9, along with this high-end camera, Nikon will also release a $1,000 price tag Z-mount mirrorless camera later this year.