Chris Winter did a great video review of the D500 for Nikon. Based on the reviews this is a solid machine with dual slots to help you back up your images on the spot. Photographers THIS feature is something you should require in any future camera, you cannot afford to lose any images.
With it's impressive 10 frames per second, this is a WONDERFUL performance camera. Nikon stepped up their game with the autofocus on this and many of their other options lately. It records in 4K which is wonderful and something we hoped Canon would jump on. A nice additional feature is the time lapse that's built in and this makes the camera a great capable camera.