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

All Screen iPhone 2030 Feature Sans Text

iPhone 18 Pro: Nine Reasons Not to Upgrade This Year

Monday September 7, 2026 5:01 am PDT by
Apple is set to unveil new iPhone 18 Pro and iPhone 18 Pro Max models on Wednesday, September 9, and the devices are expected to feature a design that's largely similar to the iPhone 17 Pro models, with a peppering of enhancements inside. Major changes are not expected until next year, when Apple is expected to introduce a radically redesigned 20th-anniversary iPhone. If you're thinking of...
apple surprise and shine event

Apple Event Today: iPhone 18 Pro and iPhone Duo Cheat Sheet

Tuesday September 8, 2026 10:24 am PDT by
Apple's biggest event of the year is almost here, and all eyes are on Cupertino. With the first foldable iPhone expected to headline Apple's "Surprise and Shine" event on Wednesday, September 9, at 10:00 a.m. Pacific Time, the rumor mill has been running full throttle, fuelled by the biggest single design change in the life of the iPhone. To get you up to speed, here's a quick reference...
apple watch series 12

Leak Hints at Four New Features for Apple Watch Series 12 and Ultra 4

Monday September 7, 2026 8:57 am PDT by
Ahead of the announcement of the Apple Watch Series 12 and Ultra 4 later this week, code in the watchOS 27 and iOS 27 betas points to a series of new features for the product line. The information comes from a new post from MacRumors forums member "pdfu." The findings include: New "Readiness" app: An all-new separate Watch app referred to in code as "Readiness," distinct from the...

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)