I would hope that as the RISC OS kernel is broken into smaller modules, it is still following a plan to allow it to work on all sorts of hardware, rather than just relying on emulation. Hopefully to the extent that if new hardware came along, RISC OS itself would not be need modifying, just the support modules/drivers would need to be created for the hardware.
This would allow small developers to make their own RISC OS systems far more easily.
They write all the drivers in house, rather than having to pay ROL to port it.
I would hope that both versions of RISC OS remain compatible, and the kernels are developed to a similar plan.