With Thunderbolt 3, you get reversible USB-C connectors, USB 3.1, Displayport 1.2, 100W of charging power, and 40 Gbps which allows two 4K 60Hz displays or one 5K 60Hz display.
http://hothardware.com/news/intel-c...ible-usb-c-connector-for-40gbps-thunderbolt-3
http://hothardware.com/news/intel-c...ible-usb-c-connector-for-40gbps-thunderbolt-3