MILLIREHM, your statement, "It is clear. . . . Df." suggests you mean NEVER, and 007 taught me to say "NEVER SAY NEVER!" It's not the perfect camera, but for my needs, it's a long way ahead of what comes in second place. For me, a revised Df would be the same old Df with a few things omitted, not added.
You are right in "Never say never"
So what i meant was that it is clear to me, that it wont fly in the upcoming near future. Why I think so?
1.
https://nikonrumors.com/2017/09/15/new-interview-with-tetsuro-goto-from-nikon-full-frame-is-the-trend-if-nikon-will-go-mirrorless-it-must-be-full-frame.aspx/Tetsuro Goto was saying
"On successor of Df in Nikon 100 Year Anniversary: the company position is that it needs Df sales volume increase to justify the investment of developing Df successor. Although Df reviews are very good buy overall sales volume is not. If we don’t buy the Df now, it’s hard to expect a Df successor. If you like Df, please buy it now. Personally I have been thinking about Df successor, not like the Df now but more retro style. Design drawings and the overall product design are ready."
so the sales were not justifying an immediate follow-up even then.
Now Nikon is focussing its energy on the Z-series launch. D5, Df and Z7 are produced in Sendai, actually production runs for the Z7 only with the other two halted.
Nikons developing and production capabilities are limited and does not allow infinite parallel releases at the same time.
The Z-hype has breaked out or at least Nikon tries to foster it because they want to sell a new system. There is no D5S out there (which usually had to be expected for this year) and we dont know when a D6 will come. Some even dont see it for sure that there will be a D5 successor on the F-mount flagship slot. Probably Nikon is planning it but who knows what the market does,will Z be a flop or a landslide or something in between.
Finally I conclude that the chances for refreshing the niche product Df weren't too high but have decreased. I'd prefer to be proven wrong.