Run the macOS Developer Beta Access Utility to download the latest macOS beta. As new macOS betas become available you will receive a notification and can install them from the Software Update pane in System Preferences.
macOS Big Sur introduces a major redesign to Apple's desktop operating system that brings it more in line with iOS and iPadOS. There are also numerous updates to Safari, Messages, Maps, and more. You can learn more about what's new by clicking here.
Developers can download the Beta Access Utility from the link below. Please download the iClarified app or follow iClarified on Twitter, Facebook, YouTube, and RSS for updates on what's new.