While there’s no official confirmation of any individual or team of people working on a public iOS 12 jailbreak, it seems that we could be one step closer as of Tuesday.
Citing a post published on /r/jailbreak, it appears that a powerful sandbox escape proof of concept for iOS 12.0-12.0.1 has been released, fueling speculation that a public jailbreak tool could be crafted in the future with support for Apple’s latest and greatest mobile operating system. Notably, the exploit is patched in iOS 12.1.