Apple Seeds Third Beta of macOS Monterey 12.1 to Developers - MacRumors
Skip to Content

Apple Seeds Third Beta of macOS Monterey 12.1 to Developers

Apple today seeded the third beta of an upcoming macOS Monterey 12.1 update to developers for testing purposes, with the new software coming a week after the second beta and three weeks after the official release of macOS Monterey.

macOS Monterey on MBP Feature
Registered developers can download macOS Monterey 12.1 beta profile through the Apple Developer Center and after the appropriate profile is installed, the beta will be available through the Software Update mechanism in System Preferences. Apple has also seeded a new beta of macOS Big Sur 11.6.2 for those who have not yet updated to Monterey or who can't on an older machine.

macOS Monterey 12.1 brings SharePlay to Macs for the first time. SharePlay is a new feature that's designed to let you watch TV, listen to music, and play games with friends and family members over FaceTime.

facetime screen sharing
SharePlay allows all kinds of apps to work with ‌FaceTime‌, with content synced for all people who are part of the ‌FaceTime‌ call. You can listen to music with Apple Music and access shared playlists, watch synced TV shows and movies together, work out together, and even share your screen for things like group trip planning or device troubleshooting.

Apple designed SharePlay to work with first-party app options like Apple TV, Apple Fitness+, and ‌Apple Music‌, but there's also an API for developers so third-party apps can also use SharePlay ‌FaceTime‌ features for games and other experiences.

SharePlay is already available in the release versions of iOS 15.1, iPadOS 15.1, and tvOS 15.1, so the Monterey 12.1 update brings Macs in line with other Apple devices.

Related Forum: macOS Monterey

Popular Stories

iOS 27 Next to iPhone

Here's When iOS 27 Rolls Out Around the World

Sunday September 13, 2026 3:00 am PDT by
Apple is about to release iOS 27, which will finally deliver more advanced Siri AI capabilities as well as a variety of other refinements, improvements, and new features to iPhones. It's Apple's biggest software update of the year, and Apple announced at Wednesday's iPhone event that it will be releasing iOS 27 sometime tomorrow – Monday, September 14. iOS 27 won't be the only release on...
iOS 27 Icon iPhone

iOS 27 Available Tomorrow With These 8 New Features

Sunday September 13, 2026 4:30 pm PDT by
During its iPhone 18 Pro and iPhone Duo event last week, Apple announced that iOS 27 will be released widely on Monday, September 14. iOS 27 should be available around 10 a.m. Pacific Time / 1 p.m. Eastern Time tomorrow via the Settings app, under General → Software Update. Below, we have highlighted eight new features and changes coming with iOS 27, with the main attraction being a...
deep black iphone 18 pro

Apple Says iPhone 18 Pro Max Sold in U.S. Differs in One Way

Saturday September 12, 2026 3:27 pm PDT by
As noted by Nicolas Lellouche, who writes for the French tech website Numerama, Apple has updated its tech specs pages for the iPhone 18 Pro and iPhone 18 Pro Max to clarify which models are equipped with its new C2 cellular modem and where. Apple now says the iPhone 18 Pro has a C2 modem worldwide, while the iPhone 18 Pro Max uses the chip in every country except for the U.S. According...

Top Rated Comments

AltecX Avatar
63 months ago

great question. There is an audience for this, but it is minuscule compared to the population that needs a stable, “it just works” operating system.

what’s amazing to me is how many aspects of the os break each release which get no additional functionality.
I'd like to see them pull another 10.6.
Just take a full update to do nothing but fix bugs, clean up code, do optimizations and refinements. Spend time tweaking and perfecting the already included tools. Not add anything that would take a very minimum amount of work to do. Just focus on the core OS itself and what's already included.
To be frank I'd really like to see MS do the exact same. Take a few update cycles to do NOTHING but fixing open bugs, cleaning up any code that needs it and spending time to re-write what needs to be. Just do what they can for 6mo-12mo focusing ONLY on bugs and performance. Don't add anything new. Just all hands-on deck to FIX.
Score: 22 Votes (Like | Disagree)
63 months ago
How many people are actually going to use all of this SharePlay stuff? I mean, really? It sounds cool, but how many people in their busy lives are really all that bothered about it?
Score: 15 Votes (Like | Disagree)
63 months ago

Is Universal Control enabled and are the memory leaks fixed yet?
A question that matters.
Score: 13 Votes (Like | Disagree)
Wilburx3 Avatar
63 months ago
Is Universal Control enabled and are the memory leaks fixed yet?
Score: 12 Votes (Like | Disagree)
63 months ago
I would really hope they prioritise fixing issues in existing features first. For example, the trackpad issue....
Score: 11 Votes (Like | Disagree)
63 months ago
Any new emojis ?

…said no one ever.
Score: 10 Votes (Like | Disagree)