Apple pushed the stable version of iOS 13.3 this week, but it didn't take long for the jailbreak tools to appear. checkra1n still uses the BootROM vulnerability called checkm8 in the A5 ~ A11 chips. Apple cannot temporarily fix this vulnerability with software update.
The recently launched checkra1n 0.9.7 beta adds support for iOS 13.3, that is to say, all devices between iPhone SE/6S to iPhone X can continue to jailbreak after upgrading the new system for personalized customization.
In addition, v0.9.7 beta also adds support for Apple TV 4K. If the "-20 error" pops up, just ignore it.
Unfortunately, iPhone 5s/iPad mini 2/mini 3, iPad Air and other devices have not been supported by the checkra1n jailbreak tool.
Although jailbreak is not as popular as it used to be, for those heavy iOS users who have strong requirements for call recording, split screen, and virtual positioning, jailbreak is still extremely playable.