That’s pretty close @marianord. Just add beta between tests-passed and stable and you’ve got it. I would add that I wouldn’t necessarily agree that tests-passed is the most stable - Discourse is a fast moving piece of software, there’ll always be bugs - I’d say any bugs on it get fixed pretty quickly, and you can update to the latest tests-passed release any time to pull in the fixes.
@Json_Blob, stable is “stable” in the sense that it does not get updated very frequently. While we do our best to iron out bugs before each of our major releases, we can’t guarantee we’ve found all of them. So stable means that any bugs you have will be there until the next major release, but you can also trust that new bugs will not be introduced for many months. See the second half of my post below for more details on each of our branches.