ASIAIR v2.1 (Build 9, firmware 10.66) appeared on my TestFlight a couple of days ago. I may be seeing it early (appears to be so in the past, even though I use the same TestFlight portal as everybody else), so you may need to be patient and wait for it to appear on your TestFlight.
Anyhow, since the release notes claims this version of ASIAIR works with the Sony mirrorless cameras, and I have an old Hutech-modified Sony A7S (the one with the big fat pixels), I dusted off that camera to try it.
Connection is with a micro USB cable -- I understand the newer Sony cameras use USB-C.
The USB Connection in the camera's Tools Setting need to set to "PC Remote." And in my case, I also needed to set the "USB LUN Setting" to Single.
Booted ASIAIR, connected the cable, and turned the camera power on. Whereupon, I see see the camera in the Camera Settings of ASIAIR:

With Manual-Bulb, and ISO 400 setting, mirror not locked (no mirror :-), battery operated, manually focused, I get a Preview image (Zeiss Vario-Tessar 16-70 f/4 lens):

Since it is not cooled, I do not really plan to use the A7S, but just reporting that it appears to work, at least for a short exposure image.
Chen