Nikon announced the development of the D6 (which we expected) and a 120-300 f2.8 lens, which I hadn’t seen rumored.
I am not at all surprised that they are releasing a new flagship DSLR. The target market, mainly professional sports photographers, will probably have enough mirrorless holdouts to make it worth it. From my testing of the Z 6, I would not be real fast to use EVF as a sports or other high action shooter, and the D5 autofocus is already generally accepted to be superior to the Z autofocus, and it will probably take some time to get the on-sensor PDAF to be that good. I am not knocking the Z autofocus, I was quite happy with the Z autofocus when I tried a Z 6, but I don’t shoot professional level sports, and for my use the almost complete coverage of the sensor area and video abilities more than makes up for any loss of speed.
I was a little more surprised by the new lens, since there is so much focus on the Z-Series lenses. I personally would not have been shocked to never see any new F-Mount lenses, but this one does seem to fit the sports and wildlife markets that may be more likely to stay with DSLRs for a while longer.