https://www.pcgamer.com/google-patent-offers-first-look-at-the-controller-for-its-rumoured-streaming-service/

Google has filed a patent for a controller. Well, a notification system for a controller. It will let you know if you've got an invite from a friend, launch an app or even tell you about a leaderboard status change. This also gives us some idea of what Google might be aiming for with its rumoured streaming service, which is expected to be announced at GDC.

The diagrams accompanying the patent aren't necessarily going to reflect what we see when the controller is properly announced, however. They are examples of what a controller with this notification system could look like.