I’m in virtually the same situation. 2022.20.7 just popped up for me after being on 2022.16.3 and having not budged even with all the 2022.20.x versions coming out. I had theorized that I had not been upgraded yet because I was opted into the beta, and that would have pushed us that were opted in past the branch point.
If everyone that is currently opted in but hasn’t received fsd beta yet is being pushed to 2022.20.7, that might indicate that they have moved the branch point of 10.69 to that version. I’m tempted to go for it if enough others who are opted in report that they're getting the update.
That might also be what this cryptic tweet is referring to (I have no idea who this guy is though):