For the past several months, an ever-increasing and more detailed suite of rumours has pointed to the near-future unveiling of the successor to HTC's critically acclaimed and commercially successful HTC One smartphone.
3D (i.e. depth-discerning) cameras, along with the image sensors they're based on, are commonly mentioned in the embedded vision coverage found here on the site. Some times, accurate depth sensing is fundamental to enabling an application. Other times, it makes an application richer than might otherwise be the case, as with gesture interfaces.