https://wccftech.com/pcie-6-0-delivers-64-gt-s-transfer-speeds-offers-two-times-data-rates-compared-to-pcie-5-0/

PCI-SIG, the organization responsible for PCIe standards worldwide, officially announces the release of PCIe 6.0 specification, with the ability to achieve 64 GT/s.

Features of the PCIe 6.0 Specification