An update to version 1.2 for the Android Auto application on Google Play will result in users seeing an updated UI on head units, one which lends a bit more functionality to those who listen to music or use navigation from the Home screen.
Following the update, an arrow icon will appear on your Navigation card on the Home screen, and a Pause or Play button will appear on Music cards. Basically, if you are using those apps, but are currently on the Home screen, these will allow you quick access to features within the application. In addition, the cards for these apps have been slightly enlarged.
In the changelog, Google also states the update includes “bug fixes and improvements.”
If you rock Android Auto in your vehicle, go grab the update.