https://wccftech.com/apple-music-beta-website-updated-with-macos-big-sur-like-design-and-new-listen-now-tab/

Apple has updated its Apple Music beta website with a fresh coat of paint. The new design update makes it look like an app from macOS Big Sur. Just like the Music app on macOS Big Sur and iOS 14, Apple has also replaced the 'For You' tab in the sidebar with a new 'Listen Now' tab.

Despite the changes, don't expect the Apple Music website to be featured enough to replace your need for a dedicated desktop app. The dynamic lyrics feature is missing and there is no 'now playing' screen. In fact, the Apple Music beta website links to the desktop app from the sidebar.