Acting as a hybrid between NAND and DRAM, Toshiba XL-FLASH may eventually make its way to SSDs and even NVDIMM to be a cost-efficient storage solution for future high-performance servers and workstations.
https://www.notebookcheck.net/Toshiba-XL-FLASH-storage-promises-DRAM-like-speeds-at-cheaper-prices.428681.0.html
We always need faster cheaper storage...the 4K of some UFS2.1 devices for example aren't significantly faster than eMMC. Even if everything looks good on paper, eventually there's always watered down crap making its way to consumers.