Well, it looks like the Nikon D850 is a big hit, if the pre-order is anything to go by. Nikon have actually sold out of all of their pre-order stock, and have issued a notice apologising for expected shipping delays.
I suppose it’s not really much of a surprise that demand for the D850 is somewhat overwhelming. Once the final specs were made public, and the first reviews out, there were a lot of happy people out there. And I heard talk from more than a few people talking about jumping ship from their current brand to switch back to Nikon.