So now that the SVN may rest in peace, how about to make life simple, everybody will use the git flow diagram (either they use master or develop, either they are advanced developers or simple folks) - it would make life easier if everybody work along the same guidelines.
You can't really use git flow if you are working off of master (since you shouldn't commit anything to master, so most of the git flow steps don't make sense).
And modules like isd2 don't fit in that model (due to permissions being per-repository).
The original plan, from what I recall, had been to release today, but we can slip a bit I don't see much reason to wait for things like warning suppressions are quite reasonable to patch into the master afterwards anyway and there are an infinite number of such changes that we want to make.
And it isn't always worth the effort to make a another branch (fundamentally, your develop is a separate branch from the github develop, it is just that you configured git to easy move things between the two). Each extra branch is something you need to keep in sync, with main. And each extra step and decision to be made requires attention that is pulled from something else.