I have not seen an official document outlining all the changes. Most are cosmetic. I have not noticed any glaring operational issues that will get you in trouble. Just make sure of ALL the settings. Failsafe altitude, collision avoidance, RTH options, etc...
Thanks!
One thing I don't understand is why they switch around the altitude and distance display. In the real airplanes, no matter what make, all the instruments are placed in the same order.