The final specification should be complete by the end of the year. It has been about six years since the introduction of the PCI-Express 3.0 standard. However, we won't have to wait much longer for the PCI-Express 4.0 standard: the final specification should be finalised before the year is out. PCIe 4.0 will bring a headlining bandwidth increase to 16 GT/s and an important step up in slot power delivery capabilities to 300W+.