I'm still waiting to find out how in the world one can access intros and endings A, B, or C when there is only one dedicated intro and one dedicated ending button on the keyboard. No one has been able to answer this question in over a week. One scenario going through a few people's heads is that one must perform this operation through a functions menu. This would be horrible for live performance. And if you used Intro A and ending C on one song, how would the keyboard know that you want intro C and ending A on the next song? I suppose you'd have to change settings for every song. I emailed Yamaha Friday and called Yesterday, but no one has gotten back to me yet.
I'm also wondering if there is still the Groove feature. Apparently there is no dedicated Groove button. This is too bad. On the PSR 740, you just press that button, and it puts a swing in styles without a swing and takes away the swing when there is a swing.
I doubt that there will be any other storage options other than what the keyboard comes with. I think Yamaha still wants to sell more PSR 9000s, and if they give this keyboard expandable storage capability, then much fewer people will want to buy the PSR 9000.
I sincerely hope Yamaha doesn't mess up what could be an incredible keyboard. I use the PSR 740 every day for gigging, and I've been waiting for months for its successor to come out. I've been hoping for the same user friendliness with some added voices and storage capacity.