https://wccftech.com/android-8-1-pixel-nexus-ota/

Google released the final developer preview of Android 8.1 last week, and today, the Android 8.1 final version has been made official for the Pixel and Nexus devices. As expected, this latest version of Android brings a slew of new features and changes that were seen on the Pixel 2 to the other Google devices. Meanwhile, Android 8.1 also brings several bug fixes and changes for the developers.

Regarding new features and changes, Android 8.1’s interface brings Pixel 2’s UI to rest of the Google devices. The new elements that come with it include At a Glance widget and the Pixel Launcher with a new bottom search bar. The Quick Settings has been made transparent, and there is a new floating power menu along with light/dark themes for the launcher and system UI, these themes are based on the wallpaper that the user has set on the device.