Sample images:
http://thenewcamera.com/nikon-d5-sample-images-2/Silent Live-View captures have increased in resolution from 2,5 MP (D4S) to 5 MP and frame rate from 24 to 30 fps (page 3, A7 #3)
Battery life has increased from 3,020 (D4S) to 3,780 (page 4, A7 #8)
The D5 can only shoot three minutes of 4K video while the D500 can do the same for 30 minutes (page 4, A11)
Shutter durability D5: 400,000 / D500: 200,000 (page 5, A11)
D5 does not support SnapBridge (page 5, A11)
The XQD version (D5-a) can write data faster than the CF version (D5-b) (page 8, A42)
Movie color sampling is YCbCr 4:2:2, color depth 8 bit (page 14, A83)
The next version of Capture NX-D will apparently finally have a retouch brush (page 16, A103)
Read more on NikonRumors.com:
http://nikonrumors.com/2016/01/08/nikon ... z3wgBOcHIM