At the time of this writing, all publicly-available jailbreak tools only support up to iOS 12.1.2. But less than two weeks ago, a tfp0 exploit was achieved on iOS 12.2, raising hopes for the possibility of a jailbreak release for this particular firmware version.
To most of the jailbreak community, a full-fledged jailbreak is more than just root access to a device’s filesystem; most users also rely on a tried and true package manager to install their favorite extensions. With that in mind, it should come as no surprise that renowned hackers like Pwn20wnd are currently playing around with Cydia compatibility on iOS 12.2, especially given the latest news.