Apple today released the sixth beta release of its upcoming update of macOS High Sierra 10.13.4 for paid developers, one week after the release of the fifth beta of ma cOS 10.13.4.
macOS High Sierra 10.13.4 provides support for some features that are also planned in iOS 11.3, such as: Messages in the iCloud that uploads all your iMessages to the cloud and keeps them in sync across all devices. It will also support Business Chat, a feature that comes when iOS 11.3 and macOS 10.13.4 are released to the public. This allows companies to offer a direct chat channel to the customer.
The new macOS update also includes the new smoke cloud wallpaper that was previously only available on the iMac Pro, and it warns if any 32-bit application opens. Apple will no longer allow 32-bit applications from the next release of macOS. The same thing happened when switching from iOS 10 to iOS 11. So developers still have plenty of time to switch their applications to 64-bit. This was not a major problem for iOS 11, even though some apps that had not been maintained for a long time finally disappeared from the app store.
It is still unclear what further improvements the update of macOS High Sierra will bring but it is certain that the new version will contain bugfixes and performance improvements for areas not previously fixed in macOS High Sierra.
There is a good chance that public Beta 6 will be released in the near future released by macOS High Sierra 10.13.4.