The Nikon D850 is still out of stock in many retailers in the United States, according to their websites.
Amazon: now shipping to pre-orders placed on January 9th
Adorama: now shipping to pre-orders placed on January 23rd
B&H: now shipping to pre-orders placed on January 3rd
What’s more, a comment in the Nikon Rumors article is quite interesting, and perhaps very telling about the demand for this camera. Bob Grant says:
I have a friend working at B&H, so I’ll just say this: The D850 is insanely popular. He says that Nikon USA is SHOCKED at the demand. Considering that it’s such an expensive camera, I think a lot of people are surprised. All I can say is this is the best camera I’ve ever owned. It quite literally does everything you might want, from sports to landscape and then delivers amazing high ISO and AF ability. Nikon really nailed it.