The next version of Steam Link for iOS and Apple TV is now available as a beta build.

You can opt into the beta on TestFlight by clicking on the link here:
https://testflight.apple.com/join/Cye7Gfyy

New in this build:

• Added the ability to pair with offline Steam clients
  
• You can now use the home button with the Backbone One controller. It works with a slight delay compared to normal buttons.