The first developer beta was released on October 28, 2021, followed by a second build on November 9. Public betas of each build were released on the following day. The update is intended to address some bugs, add support for the AMD Radeon RX 6600 XT GPU, and re-enable SharePlay, which was not ready as of macOS 12.0.1. However, Universal Control is still in development.
- macOS 12.1 beta (21C5021h), Apple Developer. 2021-10-28.
- macOS 12.1 beta 2 (21C5031d), Apple Developer. 2021-11-09.
- Apple seeds macOS 12.1 beta 2 to developers by Michael Potuck, 9to5Mac. 2021-11-10.
- Apple releases first macOS 12.1 beta as Universal Control and SharePlay remain in development by Michael Potuck, 9to5Mac. 2021-10-28.