PCI-SIG announced the technical workgroups are beginning development of the PCIe 7.0 specification. The specification is targeted for release in 2025. ... PCI-SIG Beginning Development of the PCIe 7.0 Specification Reaching 128 GT/s
Maybe as soon as they finalize PCIe 7.0, PCI-SIG should jump right on to PCIe 15.0, or thereabouts. I mean, why bother with all the intermediate specs? Everyone else will catch up, eventually.