Ah it seems I was slightly off, it's TB3 not TB4, "The USB4 specification is based on the Thunderbolt 3 protocol specification." [0] But it does require: USB-PD, PCIe & DP tunneling, minimum 20 Gbit speed, max 40 Gbit speed. Stated goals to "minimize end-user confusion".
I've seen some peripherals and such with it, no laptops yet though. The spec was released in 2019, so considering hardware cycle time we should start to see more devices soon. It's pretty cool that Framework will likely be on the leading edge of that wave.
Is Dell still gimping them to 10Gbit/s like they used to? Considered an 13" XPS for years, but then turned to Apple because of this ridiculous decision.
I've seen some peripherals and such with it, no laptops yet though. The spec was released in 2019, so considering hardware cycle time we should start to see more devices soon. It's pretty cool that Framework will likely be on the leading edge of that wave.
[0]: https://en.wikipedia.org/wiki/USB4