RE:VR next big leap
As I see it this is only good for S7 if the processor is not in the headset. If it is, then there is no need for cables either for the processor connection or for external tracking of the headset position to be fed back to the onboard processor. This makes untethered VR/AR possible except possibly for the power connection.
If hand controllers are to be used there may be a need for external sensors and connectors unless the headset can track the position and actions of the hand controllers.