Apple Releases Ninth Beta of macOS Big Sur to Developers

Apple today seeded the Ninth beta of an upcoming macOS Big Sur update to developers for testing purposes, a week after releasing the eighth beta and more than two months after the new update was unveiled at the Worldwide Developers Conference.

macOS dev beta 9 feature 1
The macOS Big Sur beta can be downloaded through the Apple Developer Center and once the appropriate profile is installed, subsequent betas will be available through the Software Update mechanism in System Preferences.

macOS Big Sur introduces a refreshed design to the Mac operating system, overhauling the entire look from the curvature of the window corners to the dock icons to the system sounds. Everything feels fresh but familiar, with a lighter and more modern appearance. There's a new customizable Control Center that mirrors the Control Center on iOS devices, putting key system controls right at your fingertips.

The Notification Center has been redesigned with iOS-style widgets that are available in multiple sizes, plus there are more interactive notifications that are now grouped by app to make it easier to see what's going on. Safari is faster and more battery efficient, plus there's a new start page that can be customized with wallpapers and sections that include Reading List and iCloud Tabs, which makes Safari more tailored to your individual usage needs.

Tabs have been redesigned, there's a built-in language translation feature, Chrome and Firefox Extensions can be ported to Safari, and YouTube supports 4K video playback. There's also an option to choose which sites an extension works with for greater privacy. Speaking of privacy, a new Privacy Report feature lets users know the trackers Safari is blocking when you visit websites.

Messages is more similar to the Messages app on iOS with support for pinned conversations, mentions, inline replies, and Memoji creation, plus the built-in search feature has been overhauled to make it easier to find links, photos, and conversations in the app.

Apple redesigned the Maps app to add support for Look Around, indoor maps, and Guides, which are lists of notable attractions, restaurants, and more created by trusted sources. Maps can also be used to generate directions for cycling routes and electric vehicle trips that can be sent to iPhone, and shared ETA updates are now viewable on the Mac.

Photos includes a better Retouch tool, Apple Music's For You section has been replaced with a Listen Now section, HomeKit Secure Video cameras support Face Recognition and Activity zones, and Siri can answer a wider range of questions than before.

In the future, the macOS Big Sur App Store will help users better understand privacy practices with clear info on the information that an app collects, and after installing macOS Big Sur, you'll see faster updates that begin in the background and then finish more quickly to make it easier to keep your Mac up to date.

For more on everything that's new in macOS Big Sur, make sure to check out our roundup.

Related Forum: macOS Big Sur

Popular Stories

iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching in Three Months With These 12 New Features

Saturday June 14, 2025 5:45 pm PDT by
The iPhone 17 Pro and iPhone 17 Pro Max are three months away, and there are plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of June 2025:Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone X through iPhone 14 Pro have a...
iPadOS 26 App Windowing

Apple Explains Why iPads Don't Just Run macOS

Friday June 13, 2025 7:46 am PDT by
iPadOS 26 allows iPads to function much more like Macs, with a new app windowing system, a swipe-down menu bar at the top of the screen, and more. However, Apple has stopped short of allowing iPads to run macOS, and it has now explained why. In an interview this week with Swiss tech journalist Rafael Zeier, Apple's software engineering chief Craig Federighi said that iPadOS 26's new Mac-like ...
iphone 16 pro models 1

17 Reasons to Wait for the iPhone 17

Thursday June 12, 2025 8:58 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models simultaneously, which is why we often get rumored features months ahead of launch. The iPhone 17 series is no different, and we already have a good idea of what to expect from Apple's 2025 smartphone lineup. If you skipped the iPhone...
Logitech Logo Feature

Logitech Announces Two New Accessories for WWDC

Friday June 13, 2025 7:22 am PDT by
Alongside WWDC this week, Logitech announced notable new accessories for the iPad and Apple Vision Pro. The Logitech Muse is a spatially-tracked stylus developed for use with the Apple Vision Pro. Introduced during the WWDC 2025 keynote address, Muse is intended to support the next generation of spatial computing workflows enabled by visionOS 26. The device incorporates six degrees of...
iOS 26 Screens

Here Are All the iOS 26 Features That Require iPhone 15 Pro or Newer

Thursday June 12, 2025 4:53 am PDT by
With iOS 26, Apple has introduced some major changes to the iPhone experience, headlined by the new Liquid Glass redesign that's available across all compatible devices. However, several of the update's features are exclusive to iPhone 15 Pro and iPhone 16 models, since they rely on Apple Intelligence. The following features are powered by on-device large language models and machine...
CarPlay Liquid Glass Dark

Apple to Let iPhone Users Watch Videos on CarPlay Screen While Parked

Thursday June 12, 2025 6:16 am PDT by
Apple this week announced that iPhone users will soon be able to watch videos right on the CarPlay screen in supported vehicles. iPhone users will be able to wirelessly stream videos to the CarPlay screen using AirPlay, according to Apple. For safety reasons, video playback will only be available when the vehicle is parked, to prevent distracted driving. The connected iPhone will be able to...
iOS 26 on Three iPhones

Hate iOS 26's Liquid Glass Design? Here's How to Tone It Down

Wednesday June 11, 2025 4:22 pm PDT by
iOS 26 features a whole new design material that Apple calls Liquid Glass, with a focus on transparency that lets the content on your display shine through the controls. If you're not a fan of the look, or are having trouble with readability, there is a step that you can take to make things more opaque without entirely losing out on the new look. Apple has multiple Accessibility options that ...
Mac Studio Feature

Apple Begins Selling Refurbished Mac Studio With M4 Max and M3 Ultra Chips at a Discount

Thursday June 12, 2025 10:14 am PDT by
Apple today added Mac Studio models with M4 Max and M3 Ultra chips to its online certified refurbished store in the United States, Canada, Japan, Singapore, and many European countries, for the first time since they were released in March. As usual for refurbished Macs, prices are discounted by approximately 15% compared to the equivalent new models on Apple's online store. Note that Apple's ...
iOS 26 Feature

Apple Seeds Revised iOS 26 Developer Beta to Fix Battery Issue

Friday June 13, 2025 10:15 am PDT by
Apple today provided developers with a revised version of the first iOS 26 beta for testing purposes. The update is only available for the iPhone 15 and iPhone 16 models, so if you're running iOS 26 on an iPhone 14 or earlier, you won't see the revised beta. Registered developers can download the new beta software through the Settings app on each device. The revised beta addresses an...

Top Rated Comments

fenderbass146 Avatar
62 months ago

8 betas (9 now) and they didn’t fix the fan issue with the MacBook Pro 16-inch when connected to an external monitor. At this point I’m ready to give up and sale this piece of c.... machine.
Your gonna sell your machine because beta software isn’t ready for production machines? Just think how stupid what you said is.
Score: 38 Votes (Like | Disagree)
MikhailT Avatar
62 months ago

IDK, they have some point. Apple controls the hardware and software - you'd expect them to work together perfectly.

I don't think "beta" excuses it. Mac OS X is over 20 years old - it should be rock steady by now. They shouldn't be having these regressions that take 10+ betas released over the course of 4 months to work out. There's major questions about what on earth Apple's software development practices look like that they produce so many bugs for so few improvements.
In a perfect world, that is how it should be. But in the real world, it doesn't work like that. macOS is some large number of factor more complicated than it is 5, 10 or 15 or 20 years ago. There are tens of millions of line of codes that constantly get updated and more complicated with various conditions that is difficult to test.

Big Sur isn't a minor update. Internally, it has massive file system changes such as the crypto-sealed read-only system volume for an example. That actually can complicate a lot of things. IIRC, it also changes how Time Machine works to back up to APFS system. Source: https://eclecticlight.co/2020/06/29/apfs-changes-in-big-sur-how-time-machine-backs-up-to-apfs-and-more/

Last year, they split the entire file system into two logical volumes without showing it as such to users. That's not even as easy as it sounds.

Two or three years ago (can't recall exactly), they've migrated everyone to a complete new file system without any serious issues.

If you go back 5 years and then compare it all at once, it has been going through a lot of massive changes internally. It just feels like minor update because we're only comparing it to the last year instead of going back further.

They're prepping the _entire_ codebase for Apple Silicon migration, that's their main focus.
Score: 21 Votes (Like | Disagree)
sdz Avatar
62 months ago

8 betas (9 now) and they didn’t fix the fan issue with the MacBook Pro 16-inch when connected to an external monitor. At this point I’m ready to give up and sale this piece of c.... machine.
You know, what "Beta" means?
Score: 19 Votes (Like | Disagree)
Mr. Dee Avatar
62 months ago
I still believe the mammoth work of targeting two different CPU architectures is likely what’s leading to the unstable state and prolonged beta. I wouldn’t be surprised if we see a few more betas.
Score: 16 Votes (Like | Disagree)
sniffies Avatar
62 months ago
Getting close. But even beta 8 was still super buggy.
Score: 15 Votes (Like | Disagree)
Anuba Avatar
62 months ago
Would love a public beta without SMB issues, external storage issues and audio glitches, then again it's not like anyone forced me to install a beta.
Score: 9 Votes (Like | Disagree)