Apple has released the fourth beta version of MacOS Monterey to Mac users participating in the beta testing program for Mac system software. The developer beta is available now and is typically soon followed by the same build for public beta testers.
MacOS Monterey will include new features and improvements to the Mac operating system, including FaceTime Screen Sharing, Live Text which allows for selecting text in images, Universal Control which allows for sharing a mouse and keyboard across a Mac and iPad, changes to Safari tabs and Safari appearance, Quick Notes which allow for app specific notes, Shortcuts for Mac, Low Power Mode for Mac laptops, changes to Photos, Maps, Messages, and many other smaller improvements and adjustments.