With this announcement, the manufacturer has segmented its products into three separate lines. The standard "SE16" line segues into the "Blue" line whereas the GP units become the "Green" units. "Black" appears to be a banner under which the firm will unite technologies sought by performance enthusiasts. This particular drive, for example, trumpets its areal density and buffer size.

Most exciting to us, however, are the areal-density-specific part numbers that will accompany the Black series. It seems WD has finally acknowledged that enthusiasts want to know exactly what revision or generation of drive they're getting as opposed to a generic "xxxx GB" unit...