Apple today previewed macOS Big Sur with redesigned interfaces such as the Dock and Notification Center, the addition of a Control Center, several improvements to core apps like Safari and Messages, and much more.

macOS Big Sur is available in beta for registered Apple developers starting today, with a public beta to follow next month. The free software update will be released to all users with a compatible Mac in the fall, according to Apple. 

Macs compatible with macOS Big Sur:

• 2015 and later MacBook
• 2013 and later MacBook Air
• Late 2013 and later MacBook Pro
• 2014 and later iMac
• 2017 and later iMac Pro
• 2014 and later Mac mini
• 2013 and later Mac Pro

Accordingly, the following models capable of running macOS Catalina will not be able to be upgraded to macOS Big Sur:

• 2012 and Early 2013 MacBook Pro
• 2012 MacBook Air
• 2012 and 2013 iMac
• 2012 Mac mini