Renowned security researcher Ian Beer recently outed yet another tfp0 exploit, this time for iOS 11.3.1. But while certain jailbreak developers are hard at work on a public jailbreak tool that utilizes said exploit, others seem to be moving ahead and devising jailbreaks for newer versions of iOS.
A video shared in a Tweet by Richard Zhu this week appears to demonstrate a functional jailbreak on an iOS 11.4 device.