The was officially released by the PCI-SIG on May 22, 2019 . This generation represents a significant leap in performance, doubling the data rate from the previous 16 GT/s (PCIe 4.0) to 32 GT/s per lane . Official Specification Access
A: Yes – a Gen5 device works in a Gen4 slot (at Gen4 speed) and vice versa. pcie specification 5.0 pdf download
is the governing body that owns and manages the PCIe standards. The official specification documents are copyrighted and licensed . The was officially released by the PCI-SIG on May 22, 2019