A video with the jailbreak of iOS 13.3.1 beta 3 on iPhone 11 Pro appeared on the network. The iOS 13.3.1 jailbreak creator @08Tc3wBB didn't say anything in the video, so it's unclear how he managed to get the jailbreak. However, the video shows that this is an iPhone 11 Pro with iOS 13.3.1 beta 3 and a successful jailbreak.
First, the jailbreak creator published a video with the jailbreak of iOS 13.3.1 beta 3 on the iPhone X, and then on the iPhone 11 Pro. The jailbreak was performed using the tfp0 exploit, but nothing else is yet known. This is an important event, since it was previously impossible to jailbreak iPhone 11 and iPhone 11 Pro. The checkra1n tool development team can add support for iOS 13.3.1, but the tool only works on iPhone X and older.
It's unclear whether the hacker will release the iPhone 11 Pro jailbreak publicly. It may do so after the release of the final version of iOS 13.3.1.