When Toshiba gave us a taste of its 64-layer BiCS 3D flash a few months ago, the technology left a strong impression. The XG5 proved fast enough to compete on even footing with Samsung's NVMe products, bringing a sorely-needed challenge to the 800-pound gorilla of the market. But the XG5 is an OEM drive, not one that's readily available to home builders. At the time, Toshiba dropped tantalizing hints of an upcoming retail drive based on the XG5. Such a drive would be a fitting sequel to last year's excellent OCZ RD400.