9to5Mac published a hands-on with macOS 11.3 beta 1.

Hands-on: macOS 11.3 beta 1 changes and features [Video]

Yesterday Apple released a huge new macOS Big Sur 11.3 developer beta to Mac users. The update brings some long-awaited new features to the table, such as the ability to set a HomePod stereo pair as the global default sound output option. In addition, the beta adds changes already implemented in the earlier release of iOS 14.5 beta for iOS devices, such as a new Made For You section in the Music app, and updates to sorting options in the Reminders app. 

Hands-on: macOS 11.3 beta 1 changes and features [Video] - 9to5Mac