Reason why not everyone gets the first version is because Tesla uses the concept of canary deployment to test release to a small audience. If deemed safe after let's say a week this audience is enlarged. When a patch is released (no new feature, only a fix) you often see that version roll out to a large percentage in just a few days.
I tend to get updates within a month after an actual release and I think most do when on wifi as I usually also get one update per month
I tend to get updates within a month after an actual release and I think most do when on wifi as I usually also get one update per month