MAybe yamaha has another option...

They could boost a new topmodel in their YPG series mobile piano's (yes they allso have Aranger feautures) with comparable feautures to S900/Tyros3...

I am also wondering that the New Tyros 3 or what ever it will be called will also have proprietary NEW STYLE formats that conform to New Voice features that will NOT be able to be played on previous Yamaha models or converted for other KB's also.
This is a possiblity.

Yeah... Perhaps Yamaha are getting fed up of being the engine that drives some of their competitors sales...

If you COULDN'T play Yamaha styles on these keyboards, would they still be as popular?

since yamaha are printing "DIGITAL WORKSTATION" on TYROS series,
that means TYROS 3 will be able to photo copy paper, print pictures, take photos, browse the web, play games....