Yes you are right!! ROLAND will use the wireless technologie in their futur TD-60 (or TD-70) first, but with a 9000$ Price tag!! The problem will be the same, i will never see it in drum store!! (For exemple At this time, I never see a TD-50 or TD-27 Line in a music store in my country) probably ROLAND will introduce (in 4 or 5 years) the successors of TD-27 with wireless technology!! But I think ROLAND will keep their patented flagship technology only for their patented flagship drum for the next 25 years (like the positional sensing, who was only for their flagship module since 1997: TD-10, TD-8, TD-20, TD-12, TD-30, TD-25, TD-50, TD-27)