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Apple has updated three OS beta releases, with third revisions of the High Sierra 10.13.4, iOS 11.3, and tvOS 11.3 now available for developer testing.
Apple pre-announced the iOS 11.3 initial release the morning before it arrived. As heralded, it includes new features like Health Records and new Animoji. The initial implementation of the battery health feature arrived with the second iOS 11.3 beta, with enhanced notifications supplied to users if a phone is being throttled because of a worn battery.
The February 6 release of iOS had build 15E5178f, and the new one sports build number 15E5189f.
The new High Sierra 10.13.4 now incorporates Messages in iCloud, a feature that synchronizes a user's Messages "stack" between multiple devices logged in to the same iCloud account, and has assorted eGPU improvements.
High Sierra 10.13.4 is also the first one to warn users that they are running 32-bit apps. Apple has previously stated that High Sierra is the last Mac operating system that will run the older apps "without compromise."
The second High Sierra 10.13.4 beta changed the name of the iBooks app to "Books." It appears to be mirroring the rebranding, and potential re-design, of the app on iOS, but a timetable for changes beyond just the name aren't clear.
The previous High Sierra beta was build number 17E150g after a minor update a few days after the initial second beta release, with the latest having number 17E160e.
Apple's tvOS 11.3 beta introduced AirPlay 2 to the set-top box. Other improvements include adds some device management rating-based content filtering, and addition of improved content matching and automatic mode switching to the fourth generation Apple TV that were first implemented on the Apple TV 4K.
The current version of tvOS 11.3 has build number 15L5186e, incremented from previous build 15L5175d.
The watchOS 4.3 beta has not been updated.