The first beta versions of iOS 11.4, of macOS High Sierra 10.13.5, of watchOS 4.3.1 It's from tvOS 11.4 were released in early April. Now, two weeks later, Apple has made their second versions available for testing with the exception of macOS 10.13.5, at least for now.
Now available to developers, iOS 11.4 beta 2 (build 15F5049c), the watchOS 4.3.1 beta 2 (15T5545b) and the tvOS 11.4 beta 2 (15L5546a).
In addition to educational news (like the School Project app and the ClassKit API), iOS 11.4 has everything to finally bring the Messages in iCloud (service that was under testing on iOS 11.3, but was not released in the final version) and the protocol AirPlay 2, which allows, among other things, HomePods to function in MultiRoom or FullRoom.
J watchOS 4.3.1 brings a new incompatibility alert for old apps and opens the possibility for third-party displays on the Apple Watch.
If more news comes up in these new versions, we will update this article with the details. ?
Update 04/17/2018 s 14:03
Today it was Apple?s turn to release the macOS High Sierra 10.13.5 beta 2 (build 17B45c) for developers; in parallel, iOS 11.4 beta 2 and tvOS 11.4 beta 2 are now available to participants of the Apple Beta Software Program.
Update II 04/18/2018 at 16:49
MacOS High Sierra 10.13.5 beta 2 is now available in the Apple Beta Software Program.