Highlights

For me, the following things stand out:

Sidecar

Use your iPad as second screen for your Mac.

Controller Support

Use your X-box or PlayStation controller with your Apple tv.

CarPlay

View your upcoming agenda items on the homescreen of your car.

iPad OS

iPad gets it’s own OS.

iTunes break-up

iTunes (on macOS) will be broken up into dedicated apps.

Apple Sign-in

Login with Apple, they can even create a “fake” email-address for you that automatically forwards!