Apple releases iOS 11.4.1 beta 3 & macOS 10.13.6 Developer beta 3
Apple pushed iOS 11.4.1, tvOS 11.4.1 Developer beta 3, and macOS 10.13.6 Developer beta 3 to the developer community early this morning. If the developer has installed the correct configuration file, he or she can see the update tips for the new beta on the Mac App Store Updates page. You can also go to the Apple Developer Center website to download updates.
So far, the changes that make to the 6th update of macOS High Sierra and iOS 11.4.1 beta 3 are unclear. It should be base on bug fixes and performance improvements. Apple is now focusing on the development of macOS Mojave 10.14, so if macOS High Sierra does not have significant problems, future updates will also be minor repairs.