I think Kyosho will produce a new Mini-Z car model (maybe MR-04 or MA02, etc) with the new FHSS board. Obviously, a new FHSS board only is also likely for existing model upgrade. But that should come after the new car model as there won't be much of a reason to upgrade the PCB just for the sake of using this new TX as it would be too expensive. Look at how much it cost for a new MR03 PCB now.