What features can Sony actually put on the A7s III?

[JWMFilms]

With the A7iii at $2000 and the new FS5M2 at $5200, what features can Sony actually put on the A7s III that separates it from the other A7 line of cameras.

I’m assuming it will have all of the A7iii features like great auto focus, the newer body design, and slow-mo 1080p120.

But, I don't know if they will put things into the A7s III like 4k 10bit or 4k 60fps, because the FS5M2 is can only do those via an external recorder.

So, what do you guys think Sony will do?