Anandtech posted a review on the The Samsung 980 PRO PCIe 4.0 SSD
A quote from the article:
It may be a bit later than originally planned, but Samsungs first consumer SSD to support PCIe 4.0 is here. The Samsung 980 PRO was first previewed at CES in January, but we didnt hear anything further until leaks started appearing towards the end of summer. Now the 980 PRO is set to kick off a new wave of PCIe 4.0 SSD releases. These new changes are the most significant changes to Samsungs PRO SSD line since the debut of its first NVMe drive. Weve put the drives through our SSD benchmark suite to see if they live up to the hype.The Samsung 980 PRO PCIe 4.0 SSD Review