Nikon did not announce any new products at the 2017 CP+ show in Japan, which explains the lack of rumors in the past few months (again, don't blame the messenger). This is the first CP+ show that I can remember where Nikon did not announce a single new product (except the new limited editions sets).
Just a reminder that for the 2017 CES Nikon only introduced the D5600 and Coolpix cameras to the US market. For the 2016 Photokina show we only saw the three rumored KeyMission cameras (already not selling well). With the exception of three nice lenses in early 2016 (105mm f/1.4, 19mm f/4 and 70-200mm f/2.8), Nikon did not have a major product announced since last January (D5 and D500). I do not count the D3400 and D5600 - the only upgrade was adding SnapBridge.
The entire company is being restructured and they are now re-evaluating all of their future products, plans and product lines. Once they are done, they will start releasing new products. I hope this will happen before the end of 2017. I already mentioned on several occasions that I was told not to expect anything major before May-June.
And again, let's not jump to conclusions too quick- maybe Nikon is the first/only camera manufacturer smart enough to address the current situation of declining camera sales and adjust for the future. It seems that all other companies are continuing to do what they have been doing for the past 5 years and I think it is just a matter of time until they get hit just like Nikon.
Thanks for the illustration Broxibear!