1) Traditional optical RF/VF
2) Accessory digital viewfinders
3) Live View
4) New sensor from a new supplier
5) About 25 MP
6) MUCH improved ISO performance
7) New improved Battery
8) ability to use R lenses (thanks to live view) via R to M adapter
9) video capability with a bottom of body add-on module
10) slight departure from traditional M body look
11) Much improved software compared to M9 based on S system software
12) overall much improved over the M9
13) lower used M9 prices
Stephen
2) Accessory digital viewfinders
3) Live View
4) New sensor from a new supplier
5) About 25 MP
6) MUCH improved ISO performance
7) New improved Battery
8) ability to use R lenses (thanks to live view) via R to M adapter
9) video capability with a bottom of body add-on module
10) slight departure from traditional M body look
11) Much improved software compared to M9 based on S system software
12) overall much improved over the M9
13) lower used M9 prices
Stephen