List of all new features in macOS Big Sur 11.3 update

Apple has released macOS Big Sur 11.3 worldwide. From the list below, you can know that your device supports macOS Big Sur 11.3 or not.

supported devices for macOS Big Sur 11.3

iMac 2014 and later
Macbook Air 2013 and later
iMac Pro 2017 and later (all models)
MacBook Pro Late 2013 and later
Mac Pro 2013 and later
MacBook 2015 and later
Mac mini 2014 and later

macOS Big Sur 11.3 update size is 5.71 GB but the update size may be different on your device. (The size of the update depends on the version of your device.)

Also, Read || List of iOS 15 and iPadOS 15 Supported Devices, new features of iOS 15 and iPadOS 15 || new features and issues - iOS 14.5 and iOS 14.6 Beta 2 || New features added and old issues fixed with 14.5 update || What's New in iOS 14.6 Beta 3 update?

What's New in macOS Big Sur 11.3?

The service tab in about this mac has been redesigned
You can now use Homepod minis in a stereo pair as an audio source
macOS 11.3 adds support for Airtags
All M1 based Macs now have hibernation support
On M1 Macs when running iPhone or iPad apps you now have windows size options
On M1 Macs when running iPhone or iPad apps you now have touch alternatives
On M1 Macs when running iPhone or iPad app you can now make the app fullscreen
There are 217 new Emoji in macOS 11.3
There are now four Siri voices of which three are new
A new "hello" screen saver has been added for the new iMac
Autoplay has been added to the Music app
There are now new city charts from around the world
There are additional UI changes in the Music app to match iOS 14.5
Podcasts have been updated with a redesigned interface
There are new options in podcasts to automatically download episodes, hide played episodes, and more.
Search in the Podcast app has been updated with categories
News+ has been redesigned to help more easily find your magazines, newspapers, and downloads.
You can now search by topic in the news app
In Safari you can now sort the start page section order
There are now WebExtensions API's that lets developers offer extensions that replace the new tab page
You can now sort Reminders under the Today smart lists
Reminders will now sync the order of the reminders across all devices
You can now Print Reminders
Xbox Series S, Xbox Series X and PS5 controller support has been added
When setting a reminder with Siri it will no longer be set to an early hour unintentionally
iCloud Keychain will now turn off properly if you want to disable it
Automatic switching of AirPods between devices should now work properly
Automatic switching of AirPods notifications should now show and not be duplicated
External 4K monitors will now correctly display in full resolution when connected over USB-C
On the M1 Mac mini, the login window should now show properly
The Dwell feature should now work as intended in the accessibility keyboard
There is new Web Speech API's that let developers incorporate speech recognition into their web pages for real-time captioning, dictation, and voice navigation
WebM and Vorbis audio support has been added to Safari