The USB Implementers Forum (USB-IF) announces the publication of the USB4 specification-- a "major update" bringing a next generation USB architecture building on the current USB 3.2 and 2.0 architectures.
First announced back in March 2019, USB4 is based on the Thunderbolt specification, and doubles the maximum aggregate bandwidth of USB while enabling multiple simultaneous data and display protocols. As such, it promises performance reaching up to 40Gbps over appropriately certified cables, as well as two-lane operation over existing USB-C cables.