Don’t keep your hopes high. The first video is 4 years old.
With that said, I'd love to see these things come off a fab line someday - there's a lot of potential in the ideas behind the Mill architecture, whether they'll pan out or not is to be seen, but if they fail I'd rather see another Itanic than to never make it to market in the first place.
Whatever the case, I do hope they make it to market but maybe that's just my own morbid curiosity.