Here is an updated list of “What to expect next from Nikon“:
Confirmed upcoming cameras:
Unconfirmed cameras:
Unconfirmed lenses:
Made-up upcoming camera models, a.k.a. clickbait rumors (I am sure I missed a few – there is a new one every week):
Nikon Zx/Zxx is used to mark prototype Nikon cameras for testing, and it is not a real name for a new model. For example, this is a Z6 camera distributed for testing before the official announcement years ago: