How precisely would this work? Do they mean that once a Win 8.1 device (RT included?) is connected to the internet, it can then be used to connect other devices? I ask because as we all know, at least the Surface devices do not have a mobile (broadband) connectivity option other than the Ethernet port (via USB for the Pro) and wireless for the RT. I also wonder why the RT does not have the Ethernet option like the Pro.