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Apple completed an update of its four major platforms — iOS, macOS, watchOS and tvOS — on Monday with the release of macOS High Sierra 10.13.6, delivering AirPlay 2 and various performance improvements to the Mac operating system.
The latest macOS revision introduces long-awaited compatibility with Apple's AirPlay 2 protocol, enabling multi-room audio streaming on Mac to compatible speakers. For now, it appears support is limited to iTunes, though future versions of the operating system could expand access to all system audio.
Currently, Apple's HomePod is the only speaker to benefit from AirPlay 2's simultaneous streaming capabilities, though major manufacturers like Bang & Olufsen, Denon, Marantz, and Sonos have promised support for existing hardware.
In addition to AirPlay 2, macOS High Sierra 10.13.6 incorporates unspecified stability and security improvements to Mac.
Bug fixes include an issue that prevented Photos from recognizing AVCHD media from certain cameras, as well as a problem that prevented Mail from moving Gmail messages to another account.
Users can download the 1.88GB macOS High Sierra 10.13.6 update from the Mac App Store for free.