Specialist of the company Keen Sucurity Lab Liang Chen demonstrated the method of jailbreak on iOS 11. A fragment of his speech at the conference on information security in South Korea is published on Twitter. Hacking is shown on the example of iPhone X.
Chen previously hacked iOS: in June 2017, at a conference in Shanghai, he demonstrated a jailbreak for iOS 10. 2 and iOS 11 beta 2.
The fact that Chen will release a tool for hacking iOS 11 is unlikely. Most likely, his research is of a theoretical nature, and he is not interested in its dissemination. In addition, for information about the vulnerabilities of iOS 11 by Keen Sucurity Lab or personally Liang Chen, there will most likely be a large reward.