AirPlay 2 now allows multi-room audio streaming on the HomePod smart speaker.
AirPlay 2 also gives you a bigger buffer when streaming music so internet hiccups don't stall your songs.
USB Restricted mode requires you to unlock your phone with a passcode or biometrics every seven days. Otherwise, plugging your phone in with a cable won't give a computer access to the device, rather it will simply charge. This is a handy feature for fending off would-be hackers.