https://www.dxomark.com/sony-a1-sensor-review-speed-and-quality-in-one/

Back in stock in B&H

https://www.bhphotovideo.com/c/product/1619483-REG/sony_ilce_1_b_alpha_a1_mirrorless_digital.html

A few thought on this camera. It's expensive, and no sign of a discount. The photo quality, as one would expect, is superb. 8k video looks great, no matter how you wish to use it.
You can use relatively cheap V60 SDXC cards, I picked up some on Black Friday for $50-$70 per card for 256gb. Sadly, there is no USB C recording. There's two slots, you can record to both or use the roll over feature to get a total of 512gb which is enough, barely, for a three hour video session and low bitrate. Supposedly 512gb card are on the way, but I could not find any. The CF option is some weird format. Pass.
The little fasteners that hold the strap are dampened so they don't tinkle, a plus.
No popup flash that I can find.
Camera is heavy compared to the GH5 types I have been using. However the grip and design is very similar. Lots of dials, one for exposure comp.
You can put all the stuff you use into a series of custom menus. Lot of buttons, as well.
The OLED? screen is good enough but it is small and there is no selfie flip. This means it also cannot filp over to act like a cover for the screen. Not great. Viewfinder is excellent.
Using a dummy battery, the overheating problem seems OK but I will test it out some more. It goes 75minutes no problems so far, I may drill holes in the dummy battery to see if that helps.
You can power it with USB C only with the battery in, which is dumb, but it charges the battery. Runs hotter if you do this.
Using a budget adapter, my 30 year old Minolta 100mm AF macro looks amazing, and so does my Minolta 50mm. You can get an AF electronic adapter by for now MF is fine. It takes any lens, so the 50 year old Nikkor 85mm looks great, as well.
Lens release button is IMHO on the wrong side. I'm sure there is a reason for this but it's hard to manage.
AFAIK, there is no way to load lens correction, but the IS will guess pretty well if you dial in the focal length. Works better with Sony lenses for both correction and IS. Handy silent mode for taking concert photos.
One nice feature for video is you can zoom in and check focus while recording.
I suppose Canon will fix their camera so it does not overheat, or you can for not too much money record raw to the Ninja with the Canon which is a good option. For now, the Sony is a decent choice. The Nikon Z9 also looks good, it's just big and heavy. Hopefully competition will drive the prices down to something reasonable.

Sony A1 vs Z Cam F8 for 8K video
These are both good cameras. IQ is about the same (!). Sony has more stairstepping which is slightly annoying. I'm surprised to see stairstepping on this camera.
Sony has slightly better color but a slight greenish tint. Z Cam skin tones are a bit more porcelain looking, but ZCam has raw.
Both cameras have LOG and good dynamic range.
Sony overheats, ZCam does not. Even after hours of filming, ZCam chugged along
In a three day session, we had several issues with USB recording on the ZCam but the internal card worked fine.
One of the A1 cameras shutdown during filming once, not too bad but not great. Using a dummy battery to keep things cool.
Sony has no USB recording but I had good luck with inexpensive V60 SDXC cards.
Battery: Z Cam has better battery options. Just clip a monster battery in the back for cheap.
Autofocus: Sony the big winner here.
Image stabilization: Sony also the big winner here. Proxies: ZCam can add proxies more easily when recording. Sony requires V90 cards which add more internal heat.
Framerates: ZCam has more frame rates
ND Filter: ZCam can add ND very easily
Lens mounts: ZCam has a better lens mount and you can change it.
Camera: if you also want a camera for photos, the Sony is a world class camera.
Travel: Sony is not light, but it is lighter than the Z Cam and you can get by with the tiny LCD on the Sony.
Audio: I prefer the audio features of the Z Cam, but we run parallel audio.
Networking, sync and apps: I prefer Z Cam here
Low light: they are both good in low light, but we don't typically film in low light. Edge to Sony if you are going for really dim.
Price: Z Cam is less expensive, although slightly more expensive to rent
For me, the final result is what matters, not the AF, IS &c. And they both deliver excellent 8K footage.

I will try it.