https://www.cnet.com/news/nikon-confirms-full-frame-mirrorless-camera-in-the-works/

Thanks to the usually accurate newshounds at Nikon Rumors, we know, or can speculate, about a lot more. That includes a countdown clock embedded in the teaser page that posted on July 23, indicating a launch date of Aug. 23. It has since been removed.

Nikon Rumors speculates that there will actually be two models with sensors of different resolutions, one around 25 megapixels and the other 45-48MP. That would make sense, given that Nikon's current full-frame models, the higher-end D850 and cheaper D610 have sensors with resolutions in those ballparks.