It wasn’t that bad before 8.0, was it?
I recall they pushed out a security fix or something to everyone like two weeks before 8.0 rolled out slowly.
But 9.0 isn't supposed to even go out to the EAP group, i.e. beta team, until the end of this month, then I figure at least of month of testing/revisions. So I suspect 9.0 will start hitting a very limited group of normal customers sometime in October.
So if you want 2018.28.5 to be the last release before 9.0 you are going to be without anything for a while.