If you're worried about reliability, 14.1 is a bad target for you. Whenever 14.1 comes, it will probably be another stage at which they add new features, thus meaning it will be unreliable for awhile too.
Since reliability is your goal, you should aim for 14.0.1 or 14.0.2 and hold off whenever 14.1 appear. Then, at that point, wait for 14.1.1 before updating again. Those x.x.1 updates are your friend.
As to the actual question, we don't know when we'll see any additional updates, but once you see a news article that 14.0.1 has gone to beta, probably a week after that.