PCIe speed to double by 2019 to 128GB/s

Version 4.0's not out the door but connection wonks have decided to fast track version 5.0

The Peripheral Component Interconnect Special Interest Group (PCI-SIG) has revealed a roadmap for PCI 5.0 to debut in 2019 at 128GB/s. And that's before it finalises PC 4.0 at half that speed."