Promises, promises, promises... feh.
My cynical mind suggests planting videos to sustain interest. Think about it, the camera isn't in full release. Why does someone in Ukraine have an SJ8 while Amazon, etc. don't? There was one posting from someone getting a camera from a Chinese online seller. Has nobody posting on SJCam or Dashcam received an SJ8? Obviously these forums are not the universe of buyers, but there simply isn't the buzz that would show up from broad release.
Further, is there any proof the videos were shot with an SJ8?
Promises, promises, promises... feh.