As the wireless networks are easier to use, technology that was built for data transfer is now used for power. I would call that cable USC (Universal Serial Charger). It looks like a standardization of a power adapter, but I don't think we can call it USB, as the "serial" part will not be really used. Profiles 4 and 5 would need special power sources, so you cannot just plug your laptop in a simple desktop (or another laptop) and get 100W of power, so you'll get a brick adapter with an USB plug instead of a custom plug - like most cellphones. But I would not expect the brick to use the initial USB function (data transfer).

This also means that the cheap Chinese USB power bricks will be even more dangerous.