Here's a new thought. Remember that crappy, blurry video uploaded weeks ago? The account was crated JUST for that video. It didnt make sense and seemed like a cheap attempt to grab views to build a channel. The the description mentioned the new detector was for RELICS, BEACH and TREASURE.
Then Minelab actually releases their own video, and low and behold it shows relics, beaches and treasure. Now that first video is gone. Obviously removed under threat from ML (along with lots of other people who downloaded and re-hosted the official vanquish video).
So I'm thinking there was some actual truth in that first vid. It was only some beeping and a blurry shot of the control head, but I bet it was a blurred edit of a real QUISH video.