Apple has released the first public beta of its upcoming upgrade, macOS 11, aka “Big Sur.”
macOS Big Sur introduces a refreshed design to the Mac operating system, overhauling the entire look from the curvature of the window corners to the dock icons to the system sounds. Everything feels fresh but familiar, with a lighter and more modern appearance. There’s a new customizable Control Center that mirrors the Control Center on iOS devices.
More info: https://www.apple.com/macos/big-sur-preview/features/