Out of the blue Intel today annouced plans to integrate Thunderbolt 3 functionality in future Intel CPU silicon, omiting the need for an additional and expensive dedicated chip on the motherboard. This will ofcourse allow to save some board space and power consumption, but this will probably result in much more choice in motherboards that support Thunderbolt 3.
Current RyZen chips only have USB 3.0 controllers internally, not USB 3.1. Similar name, different minimum signalling standards. Thunderbolt 3 imposes even more strict signalling standards.
