Don't worry - I will be the last person to ask about the ETA on your jailbreak since I'm still jailbroken on iOS 7 with no plans to upgrade. But thanks for your concern.
If I were a betting man (which I'm not), I would bet that a jailbreak for iOS 9 won't be released until November. Just cause Apple will probably release a quick iOS 9.1 on top of iOS 9 - beta already out I believe. And no point in wasting the jailbreak if it could get patched before a quick major upgrade. There may even be a 9.2 that it waits for.
I have no problem waiting until 9.2 or even a bit further if that's what it takes for Apple to get it right without problems. I have my iP6 jailbroken on 8.4 that I will use when I get bored with my 6s
What I am looking forward to is what jailbraking tweaks can bring to 3D touch.