Toshiba announced the BG4 series, a new line-up of single package NVMe SSDs with capacities up to 1,024 GB, which places both innovative 96-layer 3D flash memory and an all-new controller. ... Toshiba Memory Releases 1TB PCIe Gen3 x4 SSD on a Single Package with 96-Layer 3D Flash
this is one of the reasons WD bought Toshiba's ssd business. right now they're putting excellent Micron memory into their nvme, but the Toshiba goes into the next and we should see a price reduction on top (even tho' Toshiba historically is exp. at retail) of that of about 5-8% over WD Black nvme by fall 2018.