The Nikon D7500 is Nikon's updated to the D7200 prosumer camera body. The updated brings a few welcomed changes but also introduces a few quirks. The 20.9 MP sensor is the same that's in the big brother D500. A wonderful new EXPEED 5 processor pushes 8 fps continuous shooting, a crazy number at this price point. The buffer has been greatly improved, now capable of holding 50 RAW images in a burst. A better AF system has the same number of focus points (51) as the D7200 but has the AF meter from the wonderful D500. Auto AF fine tune is also here, again wonderful for this price point.
A brief note about RAW compatibility with new cameras: Software manufacturers need time to properly add Camera RAW profiles to their software. New cameras typically will not have RAW support for the first few weeks/months of their release. :( You can try Adobe's DNG converter (downloadable here). Unfortunately, we cannot be responsible for making sure RAW files from a new camera work with your particular computer and software so please check compatability before renting.