Android 9 Pie brings Google’s updated Material Design spec (don’t call it “Material Design 2”) to Android OS, and it begins a wave of UI updates that will spread across Google’s entire portfolio. In Android, that means revamped interfaces for the notification panel, Recent Apps, settings, and various bits of system UI. For future smartphone designs (like, say, the Pixel 3), Android 9 includes an experimental gesture navigation system and built-in notch support. There’s also a new screenshot editor, lots of improvements for text selection, and changes to the way rotation works.
Under the hood, more changes have come, too, with AI-powered battery usage controls, new rules for Play Store developers, and changes to how apps get distributed.
The usual Android review by Ars. Always worth a read.