The interface of Android 12 now includes fluid motion and animations. You'll be welcomed with the new treatment when you unlock the screen — by tapping the display or by pressing the lock screen. There are also redesigned widgets — allowing developers to offer interactive controls such as checkboxes, switches, and even radio buttons to their widgets. The key interface-level changes are based on Material You, which is an upgrade to the existing Material Design language, and is aimed at bringing a unified experience across all Google apps and services over time.
Users on Android 12 will also notice a system-wide “stretch” overscroll effect that will appear once they have scrolled past the end of the available content. It replaces the existing glow overscroll available in previous Android versions. Further, there are smoother audio transitions that will be available between apps to prevent them from playing over each other.