Apple Releases macOS 10.13.6 »

Apple:

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

I was wondering when iTunes was going to get AirPlay 2 support.

Get the Combo Update here.