That's not clear to me: Will they do fewer releases, or will they have the same quarterly release cadence as now, just with only every second release open source?

I would assume the Q1 and Q3 quarterly releases are going away altogether.

They are not.

Well it does prevent them from shipping things prematurely. I guess.

They can still ship play services and their own apps at a faster cadence.

I meant OEMs rushing the gun on new features that aren't fully baked. That probably does add support burden. (I don't know if it happens anymore but it used to be a problem on the OEM forks)

They push half-baked stuff all the time anyway, I don't think this meaningfully affects that frequency.

Well, now they can only ship half baked stuff twice a year.

They should at least be shipping monthly updates with the months security updates. Well some months have not had any since Google is now trying to batch them to be quarterly because OEMs couldn't keep up with monthly security fixes.

Nah, they can break stuff any time they feel like it. Just like before. They were never limited to following AOSP updates, just look at all the garbage they add on top. Now they just have an excuse to sit on stuff for longer if they don't feel like doing anything.