You might remember that back In May, Google showed off a pretty major makeover to the Android Auto interface. The design overhaul was originally slated for a summer release, but that obviously didn't come to pass. We have no idea what caused the delay, but it seems to finally be coming to an end as the new UI has started seeding to public beta users. Unfortunately, a quick peek at the Google Play Store listing for Android Auto reveals that all of the slots for the beta branch are already full. This means that if you aren't already a beta tester, you won't be able to experience the...
Source: https://www.gsmarena.com/new_android_auto_ui_is_finally_coming_to_public_beta_testers-news-56501.php