The Pangu Team has reportedly demonstrated a jailbreak of iOS 8.4.1 at the HackPwn2015 security conference.
A post to Weibo by HackPwn2015 confirms the report saying:
“Pangu team known domestic security team, on-site break Apple’s iOS 8.4.1 system! ! !”
It’s highly unlikely that Pangu will release their jailbreak with iOS 9 just around the corner. Hopefully the exploits used to jailbreak iOS 8.4.1 will remain usable with the final build of iOS 9.