It's a Bitmain chip, and we've already got systems for interfacing to them, so I replaced some of their circuitry with what we've already been using. I also moved some things around, simplified some things, beefed up some things. The goals were to tighten up some sloppy work, improve efficiency, improve stability, and improve manufacturability with our existing parts and processes. Also the ability (enabled by a solder jumper) to power the board from screw terminals instead of the barrel jack.
Sales are live on our website now. I need to button up some admin and post our files for license compliance (doing that later today) but product listings are up. The first run was short, around 100 units, but the next big batch is already in early stages. We'll have Supras in a few weeks as well.