MacOS 12.3

macOS 12.3 is an update to macOS 12 (Monterey) that was released on March 14, 2022 by Apple Inc.

Development history
The first developer beta was released on January 27, 2022. Among the intended feature updates are revisions to Apple Pay. This is also the first public build in which Universal Control has been implemented. However, the Python 2.7 programming language is being retired as of this version. The second beta was released on February 8 to address Bluetooth-related battery drain on MacBooks. The third beta was released on February 15 with refinements to Universal Control options. The fourth and fifth betas were released on February 22 and March 1, 2022, respectively. A release candidate became available to beta testers on March 8, 2022.