The facts are:
V-Piano-like keybed action
3 different SuperNatural Grand Pianos: CONCERT, STUDIO, BRILLIANT
same SN-Epianos as RD-700GX

same virtual tone wheel organs
300 preset and 100 user Live Sets (=setups), no tone section anymore ?
900 ROM-samples instead of 532 Tones
simple USB audio recording
Sound Focus function depends on sound playing: compressor, enhancer, booster
no more Audio Key function
no more Arpeggio
no more SRX-expansion boards