I've run into similar companies like this in the past in a few different niches and what they were doing are just repeating specs from Chinese OEM suppliers. They were not making their own hardware at all, just reselling it with custom branding and sometimes styling. It could be the case here? What would explain the accelerated development timeline, it is possible because it isn't their timeline at all, it is someone…
I think it's the case, but I also think it will not look or function anything like the mock they showed.