I must disagree that there is nothing new. There are many improvements and enhancements, such as Launchpad, 100 new audio live guitars, large color screen, reading CDG files, new rotor samples, 700Mb in user RAM, and on and on. The PDF is here:
http://www.ketron.it/images/ketron/SD9/3%20ante%20SD9%20INGLESE%20pagine%20singole_web.pdf

Is it revolutionary? maybe. I sure wouldn't judge the true capability by Robert's video. As great as he is, this was no demonstration.
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact