Originally Posted by REPASSAC:
“The hardware requirements need to be final and sufficient known to select a CPU that will perform well it's tasks.”
I think you are overestimating the amount of extra work the box could possibly be expected to undertake to provide the new features.
This isn't going to be something like synthesising 3D.
It's just handling a slightly different protocol to get at some data. The chances that even the CPU in the current box would not be able to handle that are negligible.
It would be no more of a load change than implementing something like iplayer.
Of course, if there is a possibility that some completely new compression technique will be used which would require a new ASIC then you might have a point but there is no real evidence that something like that is on the horizon.