The Optane SSDs, many times faster than current NAND-based SSDs, were originally slated for a 2016 release. Intel will no longer confirm an exact release date, but has hinted we may have to wait until 2018 for a full-scale release.
http://www.notebookcheck.net/Intel-to-delay-release-of-super-fast-Optane-SSDs-into-2017-2018.186728.0.html