After the release of the fourth beta of iOS 13.5 and iPadOS 13.5, Apple continued with the fourth beta for macOS 10.15.5, OS 6.2.5 and tvOS 13.4.5.
The most recent versions can be downloaded via the Apple Developer Center for those enrolled in the test program, or via a live update on devices running beta software. Public beta versions usually arrive a few days after the developer version, via the Apple Beta software program website.
Apple provided the third round of beta for macOS 10.15.5 OS 6.2.5, tvOS # 13.4.5 on April 29, and included a renumbering of the current beta versions of iOS and iPadOS to version 13.5 at the same time. The second round, which used version 13.4.5 for iOS and iPadOS, arrived on April 15. The first round for iOS, iPadOS and tvOS landed on March 31, with the construction of OS 6.2.5 appearing on April 1.
The release notes for the versions have not yet provided any real informationon about the new features coming in the new versions, with the exception of the first software hooks required for the Exposure Notification API, intended for use by tracking applications COVID-19 contacts under development on iOS. In particular, the hooks do nothing by themselves and require an application to function properly, and it does not appear that they exist in non-iOS products.
Given the proximity of WWDC 2020, it is likely that there will be no major introductions outside of the coronavirus related features in these versions, which will make them maintenance releases.
Appleiphonestop and Apple itself strongly advise users not to install beta on main devices or hardware they deem “mission critical”, as there is a very distant possibility of data loss or other problems . Rather, testers should install beta on secondary or nonessential devices as a safer alternative and to always make sure there are enough backups of important data before the update.