According to recently rumors on Letsgodigital, Nikon may announce two professional full frame DSLR cameras Nikon D850 and Nikon D760 this month. Note, we are first time see these kinds of rumors, so just take as a grain of salt.
According to Letsgodigital, Nikon D850’s sensor will have two options, one is Sony’s 42.4MP full frame sensor (Same sensor on a7R II), the other will be a new 50MP full frame sensor. And Nikon D850 will have 4K video recording and advanced AF system. While Nikon D760 is expected to arrive even prior to the Nikon D850, both camera could be announced this month.