Apple has released the second beta of its upcoming macOS update for paying developers: macOS High Sierra 10.13.5 Beta 2 will be released about two weeks after the release of the iOS 11.4 beta for developers.
Programmers participating in Apple's paid developer program will receive the macOS High Sierra 10.13.5 beta 2 update if they have the appropriate certificate installed on their Mac
For public beta testers, the update should also appear soon. The Apple Seed program is free and offers attendees access to iOS, macOS and tvOS betas.
But beware, beta versions are not always stable and should not be installed on a primary device, especially if it's the only Mac the user uses. At the very least, a backup should be made or updated before installation in order to be able to return to the previous state.
MacOS users get some features planned for both macOS and iOS with the beta, including news in the iCloud. The feature was also included in some beta versions of the previous operating system edition, but was later removed. News in the iCloud has been reintroduced in iOS 11.4 Beta and is also included in macOS High Sierra 10.13.5.
The previous update to mMacOS High Sierra 10.13.4 includes support for external GPUs (eGPUs) as well Business chat in news and some other bug fixes and minor feature enhancements, as well as security updates. MacOS High Sierra 10.13.5 also includes bug fixes. Whether there are also safety-relevant changes, Apple revealed so far not.