Diane in New Jersey asks:
How up to date is your recommended real estate photography gear page? I currently have a Nikon D3300 and am looking to move up and stay in the Nikon family would you recommend the Nikon D3400, Nikon D5600, or perhaps the newest Nikon D7500?
I think you should consider what your underlying motivation for upgrading your gear is. My guess is that you want to raise the level of your work. The fact is that upgrading your gear rarely changes the quality of your work that much.
I suggest rather than upgrading your equipment, that you either go to one of the real estate photography workshops we publicize here on PFRE or get some one-on-one coaching from one of the coaches on the PFRE coaching page. Either one of these approaches is more likely to improve your work than an equipment upgrade.
Ok, sorry about the lecture. To answer your upgrade question more directly, I suggest that if you want to stick with an APS-C Nikon, a better upgrade choice might be a D7200. In many ways, the D7200 is better than the D7500 announced in April of last year. For a good comparison, see the D7500 review at DPreview.com.