A12+ devices can only be jailbroken if they are on iOS 13.3 or below (unc0ver). However, A11 and below devices can jailbreak on the latest firmware, because of hardware exploit found on those devices (checkra1n). If you are on A12 devices, stay on as low of a firmware that you can. It will give you a better chance of being able to jailbreak if any exploits are found.
Earlier this week, with the release of the new iPad Pro, a new magic keyboard is also being sold. In the release notes, it mentions that the software needed for this keyboard will be coming with iOS 13.4 on March 24. The importance of this is that when Apple releases new software, they point out kernel exploits that they have patched.
Like the release of iOS 13.3.1, they noted the patches they had made, Causing unc0ver to be released for the previous versions. We may see a similar thing happen Tuesday next week. If Apple makes any patches.
Bottom line is, if you are waiting to jailbreak. But have already updated to iOS 13.3.1, stay there! Do not update to iOS 13.4, because when it is released. It might just mean a jailbreak for iOS 13.3.1.
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