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

Apple Seeds First Beta of macOS Monterey 12.1 to Developers

Apple today seeded the first beta of an upcoming macOS Monterey 12.1 update to developers for testing purposes, with the new software coming just a couple days after the official release of macOS Monterey.

macOS Monterey on MBP Feature
Registered developers can download the beta through the Apple Developer Center and after the appropriate profile is installed, betas will be available through the Software Update mechanism in System Preferences.

According to Apple's release notes, the update enables support for graphics cards that integrate the AMD Radeon 6600XT GPU. There are no other new features mentioned aside from bug fixes. We'll update this article should we find anything else new after installing the beta.

Related Forum: macOS Monterey

Popular Stories

iPhone Handoff Feature

iOS 27 Introduces New 'iPhone Handoff' Feature

Wednesday September 2, 2026 12:35 pm PDT by
Apple has added a new "iPhone Handoff" feature to iOS 27 that will allow you to switch between two iPhones while using the same phone number on each device. This functionality was briefly mentioned during the WWDC 2026 keynote in June, on a slide that listed hundreds of new features coming in iOS 27 and corresponding software updates, but Apple never shared any further details at the time. ...
Dynamic Island iPhone 18 Pro Feature

iPhone 18 Pro Prices Estimated Ahead of Apple Event Next Week

Thursday September 3, 2026 3:41 am PDT by
Less than a week before Apple debuts new iPhone 18 Pro models, research firm TrendForce has estimated the prices of the devices based on the latest hardware cost environment. TrendForce's price estimates compared to last year's models look like this: Model Starting Price Model Starting Price Change iPhone 17 Pro $1,099 iPhone 18 Pro $...
Apple Foldable Thumb

iPhone Ultra's Very High Price and Features Revealed in New Report

Thursday September 3, 2026 7:33 am PDT by
Ahead of Apple's event on Wednesday, September 9, where it is expected to unveil its first-ever foldable iPhone, Taiwanese research firm TrendForce today outlined the device's estimated price range, features, and some other key details. In the U.S., TrendForce estimated that the foldable iPhone will have a starting price of $2,099 to $2,299 and said the highest-end configurations could...

Top Rated Comments

Kylo83 Avatar
63 months ago
Hope this brings safari 120hz on the new MacBooks
Score: 8 Votes (Like | Disagree)
63 months ago
Build number is 21C5021h
Score: 4 Votes (Like | Disagree)
ElectricPotato Avatar
63 months ago

How bad are the bugs in the .0 release?
I got brave and leaped. Pleasantly, no compatibility issues (VMWare Fusion and Mathematica), no obvious breakage (like Mail was on Catalina .0). No weird hardware behavior (MBP 2018, Mini 2018). That's obviously the way it should be, but after recent history I did not have positive expectations.
Score: 3 Votes (Like | Disagree)
63 months ago

I can guarantee it won’t be fixed I bet they know about it and they want it that way, I doubt it’s a bug as they wouldn’t release a new product with such a major flaw, the whole pro motion thing with the new MacBooks is hyped to much; safari will stay at 60hz
I don't think it's intentional because they specifically used scrolling in Safari in the Apple Event to demonstrate how fluid the ProMotion screen is.

Look at 36:15
Score: 3 Votes (Like | Disagree)
63 months ago

No PB yet? Normally comes 24hr after Developer one, but still not showing.
It’s out, you were just an hour too early.
Score: 2 Votes (Like | Disagree)
63 months ago
Can someone ASK APPLE execs directly and find out if External GPU use will ever be supported in Monterey for Apple Silicon?

It's bad enough the machine is totally NOT upgradable. RAM, CPU, SSD.

The least they could do is allow use of external GPU's or video cards.
Score: 2 Votes (Like | Disagree)