I'd say that Thunderbolt 3 is their best bet to make it work.
What I'm not so sure about, given the theories that circle around this and other forums, is if there would be a Supplemental Computing Device.
Please excuse my bad English.
Currently gaming on a PC with an i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070
Steam / Live / NNID : jonxiquet Add me if you want, but I'm a single player gamer.