Apple has released an update known as Catalina which is macOS 10.15.7. The new 10.15.7 can be downloaded for free from the Apple Store, includes Sidecar, which will allow the users to extend their desktop like the MacBook Pro.
The iPad can be used as a second screen here. The Mac can be operated with voice commands and iTunes has been replaced by separate programs like Apple Music, Apple Podcasts and Apple TV.
The macOS Catalina 10.15.7 will be rendering several security updates and bug fixes for the Mac. It will troubleshoot an issue where macOS would not automatically connect to Wi-Fi networks.
The new version shall also fixes the problem of inability or hindrance to files syncing through iCloud Drive. It shall also solve a graphic issue that may occur on iMac (Retina 5K, 27-inch, 2020) with Radeon Pro 5700 XT.
However, it has already been declared that some features will not be available for all regions, or on all Apple devices. But the new features will definitely be beneficial for those devices where the macOS Catalina 10.15.7 is available.