Apple Releases macOS Catalina

macOS Catalina - the latest desktop operating system from Apple is now available as a free software update.

Recently, Apple announced that macOS Catalina is now available as a free software update, featuring Apple Arcade on Mac and all-new entertainment apps(with exciting new features such as Sidecar, Voice Control and Screen Time).
With macOS Catalina, you will be able to enjoy Apple Arcade, a new game subscription service featuring new, exclusive games. This latest version of mac operating system also features all-new Mac versions of Apple Music, Apple Podcasts and Apple TV apps.
Catalina brings a new feature dubbed "Sidecar" which extends Mac desktops with iPad as a second display, or tablet input device using Apple Pencil with Mac apps.
There is a transformative accessibility feature - "Voice Control" - that allows Mac to be controlled entirely by voice.
Because of Mac Catalyst, users now will get to see their favorite iPad apps in Mac versions, including Twitter, TripIt, Post-It, GoodNotes and Jira.
macOS Catalina 
Source:  macOS Catalina
With this release, Screen Time is coming to Mac. This will give users insight into how they spend time in apps and on websites.