Yamaha underestimated the market for 76 key arrangers.. but found the 76 version of tyros 5 selling much better then the 61 keys...

This also might hold true for a high end 88 key version of tyros 6... or even a mobile version of the cvp 809...

In Holland the future of keyboards is 88 keys wide... with a not to heavy weighted piano action... and the future is 30 years or younger...