Don't forget about one thing. To start shipping end of September everything must go perfect from now on. There is no room for any, even tiny problem. If they have started the new tape-out week or 2 weeks ago the chips will be produced middle of September. Until that time they have to arrange chip boards (which is bunch of colored squares right now), PSU boards, PSUs and cases. They have to prepare firmware for their controller boards. WIFI is back in the manual they referred to.

And when the chips arrive all these components have to miraculously and flawlessly co-operate together to allow shipment within 2 weeks.
That is not gonna happen.