Apple released macOS Monterey 12.1 RC 2 preview version for developers, the specific version number is 21C52, for testing, the new software is a few days later than the RC version.
Moreover, registered developers can download the macOS Monterey 12.1 Beta configuration file through the Apple Developer Center. After installing the corresponding configuration file, the beta version will be provided through the software update mechanism in the system preferences.
Furthermore, macOS Monterey 12.1 brings SharePlay to Mac for the first time. SharePlay is a new feature designed to allow you to watch TV, listen to music, and play games with friends and family through FaceTime.
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SharePlay allows various applications to be used with FaceTime, and the content of all people participating in FaceTime calls will be synchronized. You can use Apple Music to listen to music and access shared playlists, watch synchronized TV shows and movies together, exercise together, and even share your screen for group trip planning or equipment troubleshooting.
Apple designed SharePlay to work with first-party application options (such as Apple TV, Apple Fitness +, and Apple Music), but also provides APIs for developers, so third-party applications can also use the SharePlay FaceTime feature for games and other experiences.
SharePlay is already available in the iOS 15.1, iPad OS 15.1, and tvOS 15.1 releases, so the macOS Monterey 12.1 update brings the Mac in line with other Apple devices.