Despite the hours, Apple has released the first public beta for macOS High Sierra 10.13.4 beta testers just two days after releasing the developer update and a few days after the release of the macOS High Sierra 10.13.3.
Beta testers who are registered in Apple's beta testing program will be able to download the new macOS High Sierra beta via the software update mechanism in the Mac App Store.
However, if you are not yet a beta tester and want to get started, you can sign up to participate through the beta testing website, which gives users access to beta versions of iOS, macOS and TVOS before the final versions are released.
macOS High Sierra 10.13.4 introduces support for some features that are also available in iOS 11.3, such as Messages in iCloud, a feature that uploads all your iMessages to the cloud. It will also be compatible with Business Chat, a feature that will arrive with iOS 11.3 and macOS 10.13.4 when they reach the public.
The new macOS update also includes the smoke cloud wallpaper that was previously only available on the iMac Pro in addition to presenting the new warning that an application is 32-bit so we can think about removing them.
The future of macOS and Apple is to eliminate 32-bit applications, just as it was done with 32-bit applications from iOS. Apple has said that macOS High Sierra is the latest version of macOS that will support 32-bit applications.