https://wccftech.com/pcie-6-0-specification-progress-now-at-final-draft-data-transfer-speeds-as-high-as-128-gb-s/

PCI-SIG revealed earlier this week that PCIe 6.0 specification has reached the Final Draft stages—an important and much-needed step that shows completion of the Gen 6 PCIe technology. Any current SoCs conformable with version 0.9 specs will now be accessible to the new 1.0 versions. The only uncertainty is what applications need to upgrade and prepare for the PCIe 6.0 technology.

PCIe 6.0 is listed to increase data transfer rates to 64 GT/s per pin, which is an increase from PCIe 5.0 speeds of 32 GT/s. The new technology will remain backward compatible with any current existing hardware. PCIe will now be capable of data transfers of 128 Gb/s in all directions on the x16 interfacing.