A long time in the works, this is the first completely open source jailbreak to be released for an almost current version of iOS (11-12.1.2).  This is an interesting jailbreak.  It is semi-tethered, but unlike previous jailbreaks, this can at least be untethered from the device itself.  Using Cydia Impactor, you can side load the unc0ver app and install the jailbreak directly from the app.  it also allow the easy rejailbreak upon reboot or battery drain. Great work all around despite the remaining bugs and instability (it is still beta. Huge thanks to the efforts of @pwn20wnd and @sbingner).  To be honest, there are very few tweaks and apps that are ready for iOS 12, but i am excited to see the tradition of jailbreaking continue.  I have cydia again!  For the first tine since I closed down my own cydia repo.  C’mon developers, do you thing!

In truth, i never got it going on my phone, only my iPad.  I get a crash on my phone immediately after this dialogue comes up.  It took a few passes to get a picture (this one extracted from a screen record).  Not sure exactly what went wrong, but “Unexported kernel task port” is my best clue.  With my phone cashing as soon as it becomes untethered, i am never actually able to run Cydia. On my iPad, instead of rebooting, it resprings.  either way, it is very hard to read the final message.

UPDATE:  This problem was resolved in b38.