Apple has just released the fourth beta of the macOS High Sierra 10.13.5 next update for developers one week after the third beta and more than a month after the macOS High Sierra 10.13.4 update was released.
The new macOS High Sierra 10.13.5 beta can be downloaded through the Apple Developer Center or through the software update mechanism on the Mac App Store with the proper profile installed.
macOS High Sierra 10.13.5 introduces support for Messages in iCloud, a feature that was previously present in the macOS High Sierra 10.13.4 betas and was retired before the update was released. Messages in iCloud are also available in iOS 11.4.
The Messages in iCloud feature is designed to store your iMessages in iCloud for better synchronization. At this time, incoming iMessages are sent to all devices where you log in to your Apple ID, but it is not a true cloud-based sync because old messages are not displayed on new devices.
ICloud Messages also allows your old iMessages and attachments to be stored in iCloud instead of on your iPhone, iPad, or Mac, saving valuable storage space.
The update also includes bug fixes and performance improvements for issues that were not addressed. on macOS High Sierra 10.13.4But since Apple does not provide detailed release notes in macOS High Sierra betas, we may not know exactly what is included in this new beta until developer data begins to transcend.
No major exterior changes found in the first three versions of macOS High Sierra 10.13.5, so we'll be Be careful if in this new beta there is something to say in that regard.