I acknowledge that the main thing to improve upon is the voices. 47 new voices + 2 new drums is not that much improvement for three years.
Look at all you get in a cell phone now that you couldn't get three years ago.
Look at all you get in software voices. There has been an explosion in new technology - in voice technology, speaker design, key design, display technology, etc., and Yamaha is not taking advantage of it with this keyboard. It is indeed a facelift on the PSR3000, kind of what the PSR2100 was to the PSR2000 - a few extra voices and that was it.
And are there any new features? Any new buttons, capabilities? Probably not.
Beakybird