Apple has redesigned many aspects of the OS this time around, and it has described Big Sur as the biggest upgrade since it introduced Mac OS X. You’ll get to try out significant updates to the likes of Messages, Maps and Safari. The latter includes biometric sign-in options for website sign-ins, along with 4K HDR support for Netflix playback. Apple has overhauled the Notifications Center with support for more customizable widgets, while the new-look Control Center takes its cue from iOS.
As ever, since this is a beta, there’s an element of risk as there might be some bugs. So be sure to back up all of your data before installing it.