Apple has released the second beta build of macOS High Sierra 10.13.4 for debugging on the Mac. This comes after the second iOS 11.3 and tvOS 11.3 betas were seeded and two weeks after the first build was released.
To install the build, head over to the “Updates” tab in the App Store and check for updates. There, you’ll find the new build ready to install. Just click the “Update” button next to the macOS High Sierra 10.13.4 beta listing and restart your Mac. The process may take a little while, so be patient and don’t turn off your Mac manually if you don’t have to.
So far, there hasn’t been any noticeable changes spotted in the new beta but we’ll let you know if we find anything down the line. As for now, it looks like only bug fixes and system stabilities are present. Messages in iCloud is present, however.