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One day after the last updates of iOS and macOS, Apple has released three new betas, bringing "Find my AirPods" and APFS to iOS, a new Night Shift mode to macOS, and fast scrolling to tvOS 10.2.
The iOS update will update the file structure on a device to Apple's new APFS, that was first revealed at the 2016 WWDC. Other changes include a new "Find My AirPods" ability, additions to Siri, CarPlay improvements, and some changes to Maps.
Other than the Night Shift addition for macOS, it is not known what new features, if any, are included with the 10.12.4 beta.
The tvOS 10.2 beta is also available to developers, bringing an accelerated scrolling feature to the Siri remote to allow users to run through lists of content much faster.
Monday's updates spanned Apple's entire product line, with fixes implemented for GPU issues with the 2016 MacBook Pro, the first watchOS update since December's problematic release, and minor fixes to iOS and tvOS.
APFS, the Apple File System, is "optimized for Flash/SSD storage, and engineered with encryption as a primary feature," according to an entry in the WWDC 2016 schedule. In official documentation, Apple adds that it uses a "unique copy-on-write design" with I/O coalescing, meant to optimize performance while staying reliable.