Apple has released a new version of macOS High Sierra that brings Messages in iCloud to the Mac. macOS 10.13.5 is now available for all compatible Macs through the Mac App Store.
Apple has released the fifth developer beta version of macOS 10.13.5 for testing. The beta version includes Messages in iCloud which works with iOS 11.4 beta.
Apple has released the fourth developer beta version of macOS 10.13.5 for testing. The beta version includes Messages in iCloud which works with iOS 11.4 beta.
Apple has released the third developer beta version of macOS 10.13.5 for testing. The beta version includes Messages in iCloud which works with iOS 11.4 beta.
[Update: Apple has now released the second public beta of macOS 10.13.5.]
Apple has released the second developer beta version of macOS 10.13.5 for testing. The beta version includes Messages in iCloud which works with iOS 11.4 beta.