The next laptop you buy with a USB Type-C port could be even more useful than you thought. Intel today unveiled Thunderbolt 3, which uses an identical port design as its USB brethren. So if Apple sticks with its new MacBook design, for instance, it could adopt the port and enable both Thunderbolt and USB Type-C without any adapters. It's a step toward simplifying the messy sea of ports often found on laptops and PCs, and could make Thunderbolt accessible to a larger group of people than before. Thunderbolt 3 offers more than just port convenience, however. It'll support a 40 Gbps connection over Thunderbolt, which is double the speed of Thunderbolt 2, 10 Gbps USB 3.1 and DisplayPort 1.2.
Source: Thunderbolt