3D XPoint has been available for several months now, just not in the DIMM form factor. E.g. the Intel P4800X: https://www.anandtech.com/show/11209/intel-optane

3D XPoint has been available for several months now, just not in the DIMM form factor. E.g. the Intel P4800X: https://www.anandtech.com/show/11209/intel-optane-ssd-dc-p4800x-review-a-deep-dive-into-3d-xpoint-enterprise-performance https://www.anandtech.com/show/11209/intel-optane-ssd-dc-p48...