content: You'd only be able to use USB-C products with a new not yet released Thunderbolt 3 socket (Looks the same as USB-C) but you wont be able to use Thunderbolt 3 products with a USB-C socket. This is similar to how Thunderbolt (1&2) is at present which uses a mini DisplayPort connector but you cant plug a Thunderbolt cable into a mini DisplayPort socket but you can connect a display using the Thunderbolt socket.