There are no shortage of Nikon D850 rumors these days. Following up previous news that Nikon shooters should be happy about, the additional features, pricing, and release date information once again found by NikonRumors set the stage for what continues to be an increasingly optimistic outlook for the D850.
According to a NikonGear.net forum post found by NikonRumors, a user claims to have spoken with Nikon Austria, which gave him quite a bit of information about the Nikon D850. First, it will feature 10 fps without the battery back. While my own assumption must be that this would almost have to be in a cropped DX mode in a lower resolution, the report also claims that the D850 will be a sports-capable camera with 46-megapixel resolution. Still, this could be taken as "sports-capable" (in DX mode) with "46-megapixel resolution" (when you're shooting slower). This doesn't help clarify much, but it does put a solid number on how fast one can shoot; and it's in line with the preivous more-than-eight-fps rumor.
The camera will also supposedly be released in October at a $1,000 premium over the D810, which will apparently continue to be sold alongside the D850 (probably the same for the D810A if this is the case). That would put the price at a very fair $4,000 if all of this is true (and if Nikon doesn't bump the D810 price down just a bit with the release of the D850).
While the D850 should make use of the same EN-EL15a battery pack as most of Nikon's smaller DSLR bodies today, there will be a new battery grip, presumably to fit the new body. Meanwhile, there is now a rumored release date of October 2017.
Again, all features considered, this new body still seems a bit too good to be true, especially at "just" $4,000. But again, none of these rumors suggest that we aren't necessarily talking about a 46-megapixel body that shoots full resolution at 5-6 fps, 24-30-megapixel DX-mode at 10 fps, and 4K video. That would still be a quite capable, very respectable camera. Surely, this could be considered a baby D5. But I would still stand to call it an all-in-one. With a 46-megapixel sensor, this would be an entirely different beast, DX-mode or not. With the D5's autofocus system, I'm still waiting to hear what the real drawback to the D850 would be. This would make it over 30-percent cheaper, would give it better image quality, and would make it lighter — all for the handicap of a couple frames per second? If Nikon does this, they should hope to be nearly sold out of their current D5 stock.
Would you get the D850 for $4,000? As always, these are all very much rumors and very far from first-hand accounts with people that would actually know what's going on. So don't count on anything just yet.