Today , Apple released iOS 13.5.1, saying that, while not specific on changing logs, "the company offers significant security updates and is recommended for all users." However, as the Apple Software Updates account of Twitter noted, the update is intended to fix the kernel vulnerability of the Unc0ver recent jailbreak.
The support page for Apple makes it simpler — the update has been designed to prevent an application from "powering kernel privilegedly into arbitrary code" — in other words iOS 13.5.1 is intended to avoid jailbreaking.
In particular, Unc0ver jailbreak was noteworthy in iOS prisonbreaks because it was available on the current iOS 13.5 and users of Apple's latest devices could install new apps outside of Apple's own App Store.
While it's definitely fun for iPhone fans who can customize their smartphone even more, jailbreaks like this can also be a big security breach in Apple's software (which the company depends heavily on to support iOS), Apple has therefore not really been moving too fast for the sake of patching the vulnerability.