Keeping TOH compatability in future devices bring up so incredibly much restrictions on other aspects of the design that it would be downright stupid to even consider this as an option. It is impossible to please everyone, but enforcing these restrictions on themselves would prevent any possibility of moving forward. If the design of a future model is not yet complete or certain aspects are not yet determined, they will never state anything about this. I wouldn't also. I can only hope that for future models I can hazz access to proto models We'll see what they come up with at Slush! Looking forward to it!