The newest version of the Genesys is the Genesys PRO. The Genesys PRO also has 61 Keys but without the internal speakers of the Genesys. The Genesys PRO is therefore quite a bit lighter than the Genesys. The Genesys PRO also has upgraded samples of Voices in it, ie., "many higher quality voices included in the sample set" compared to the Genesys and the PRO has additional features also.
It is possible that the demo you heard was from the new Genesys Ensemble Stage Piano. The Genesys Ensemble's demo is truly wonderful. GEM did an excellent job producing it. If that's the demo you heard there is unfortunately no information on GEM's Italy site concerning the Genesys Ensemble. Possibly Paul Davis of GEM could further enlighten us as to where there is information and specs concerning the Genesys Ensemble. From what I understand it is a "Stage Piano" and not necessarily an Arranger Keyboard. Although it could indeed have Arranger functions.
Best regards,
Mike
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Yamaha Genos, Mackie HR824 MKII Studio Monitors, Mackie 1202 VLZ Pro Mixer (made in USA), Cakewalk Sonar Platinum, Shure SM58 vocal mic.