Following the release of iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2 and HomePod 11.4.1. Apple has released macOS High Sierra 10.13.6 to the public alongside iTunes 12.8.
This release includes AirPlay 2 for iTunes which will have less latency and is now more reliable. The interface now recognizes stereo paired HomePods, previous to this update both HomePods would be a separate entry. iTunes did have the functionality to play audio to AirPlay 1 devices but Wi-Fi disruptions and latency were common issues.
As for the macOS High Sierra 10.13.6 update, the update improves the stability and security of your Mac. Apple as per usual recommends the update for all Mac users. You can see the full change-log below:
The macOS High Sierra 10.13.6 update adds AirPlay 2 multi-room audio support for iTunes and improves the stability and security of your Mac. This update is recommended for all users.
AirPlay 2 for iTunes:
- Control your home audio system and AirPlay 2-enabled speakers throughout your house
- Play music at the same time on multiple AirPlay 2-enabled speakers in your house, all in sync
Other improvements and fixes:
- Fixes an issue that may prevent Photos from recognizing AVCHD media from some cameras
- Fixes an issue that may prevent Mail users from moving a message from Gmail to another account
For more detailed information about this update, please visit: https://support.apple.com/kb/HT208864
For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT201222