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 else's who started a long time ago. And it may be they are talking about their supplier's two year roadmap or something similar.

PS. One of the companies (or more specifically its owners) that was doing did was eventually charged with fraud.