Apple Seeds New Build of OS X Mavericks Golden Master

Apple has seeded a new build of the OS X Mavericks Golden Master to developers, a little more than two weeks after the first GM seed. According to 9to5Mac, the build is only available for users performing a fresh install of Mavericks, with some users having luck re-installing the new GM over the prior version.

mavericks
The prior GM had a build number of 13A598, while the new release is build 13A603. Apple is reportedly targeting a late October launch for Mavericks and it's possible the company will give a final release date at Tuesday's media event.

Related Forum: OS X Mavericks

Popular Stories

Apple Shopping Event 2025

Apple Announces 2025 Black Friday Event, Here's What You Can Get

Thursday November 20, 2025 6:28 am PST by
Apple's annual four-day Black Friday through Cyber Monday shopping event is returning on Friday, November 28 through Monday, December 1 in many countries, including the United States, Canada, Australia, New Zealand, France, Germany, Italy, Spain, the United Kingdom, Belgium, the Netherlands, Sweden, Thailand, and others. During the shopping event, customers can get an Apple gift card with...
iPhone 17 Pro Cosmic Orange

10 Reasons to Wait for Next Year's iPhone 18 Pro

Wednesday November 19, 2025 4:00 am PST 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 at the same time, which is why we often get rumored features months ahead of launch. The iPhone 18 series is no different, and we already have a good idea of what to expect for the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth...
iOS 26

iOS 26.2 Adds These New Features to Your iPhone

Thursday November 20, 2025 10:50 am PST by
iOS 26.2 is currently in beta testing. The upcoming update includes a handful of new features and changes on the iPhone, including a new Liquid Glass slider for the Lock Screen's clock, offline lyrics for Apple Music, and more. In a recent press release, Apple confirmed that iOS 26.2 will be released to all users in December, but it did not provide a specific release date. Keep reading...
hikawa phone grip stand apple%402x

Apple Launches Second Limited-Edition iPhone Accessory in a Month

Friday November 21, 2025 3:53 am PST by
Apple has begun selling the Hikawa Phone Grip and Stand, a new limited-edition iPhone accessory designed with accessibility in mind. Designed by LA-based Bailey Hikawa to celebrate the 40th anniversary of accessibility at Apple, the grip uses magnets to securely snap onto any iPhone with MagSafe. Apple says it can be removed with ease, and doubles as a stand with two different viewing...
ipad mini 7 feature red and blue

iPad Mini 8: Four Major New Features to Expect

Wednesday November 19, 2025 7:50 am PST by
Apple's eighth-generation iPad mini is highly likely to arrive next year, offering a significant refresh of the device with at least four major new features. OLED Display The next-generation version of the iPad mini could feature an OLED display, as part of Apple's plan to expand the display technology across many more of its devices. Apple's first OLED device was the Apple Watch in 2015, ...
applecare apple care banner

Apple Brings New AppleCare+ Options to India

Tuesday November 18, 2025 8:42 am PST by
Apple today announced an expansion of AppleCare+ coverage in India, with new options for monthly and annual plans, and the addition of Theft and Loss for iPhone for the first time. Options for monthly and annual AppleCare+ plans in India provide more choice and flexibility, allowing users to keep coverage for as long as they require. Apple's vice president of Worldwide iPhone Product...
watchos 26 workout app

Apple Watch Users Claim Workout App Is Now Worse in Every Way

Thursday November 20, 2025 7:01 am PST by
Apple Watch owners have been voicing their frustration online over changes to the Workout app that Apple introduced in watchOS 26, with many finding the redesigned interface makes starting exercises difficult and exasperating. When Apple launched watchOS 26 in September, the Workout app went from large, easily tapped workout tiles to a scrolling, corner-button interface. Instead of tapping a ...
ipad black friday 2025

The Best Early Black Friday iPad Deals

Thursday November 20, 2025 10:20 am PST by
Black Friday is just over a week away, and iPad deals have finally started to flood in at retailers like Amazon and Best Buy. Below we're tracking discounts on every current generation iPad, including lowest-ever prices on M3 iPad Air and M5 iPad Pro, plus steep markdowns on iPad and iPad mini. Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a ...
apple wallet drivers license feature iPhone 15 pro

Two More U.S. States Commit to Offering iPhone Driver's Licenses in Apple Wallet App

Thursday November 20, 2025 8:21 am PST by
In select U.S. states, residents can add their driver's license or state ID to the Apple Wallet app on the iPhone and Apple Watch, and then use it to display proof of identity or age at select airports and businesses, and in select apps. Earlier this week, Illinois became the 13th state in the U.S. to offer the feature. Subsequently, we shared a list of additional states that are committed...
android iphone airdrop quickshare

iPhone Users Can Now AirDrop Files to Android Devices

Thursday November 20, 2025 9:47 am PST by
Google today announced a new cross-platform feature that allows for file sharing between iPhone and Android users. With AirDrop on the iPhone and QuickShare on Pixel 10 devices, there is a new file transfer function available. The file sharing option works on Apple devices that include iPhone, iPad, and Mac, along with the Pixel 10, Pixel 10 Pro, Pixel 10 Pro XL, and Pixel 10 Fold....

Top Rated Comments

PaulOBrain Avatar
158 months ago
I do know for sure. You can't upgrade the old GM build to the new version. It forces you to do a clean install.

Funny, as some users have done just that. So again, stop spreading misinformation.
Score: 17 Votes (Like | Disagree)
PaulOBrain Avatar
158 months ago

One thing is for sure anyone who has invested a whole lot of time installing and setting up their new Mavericks install has wasted it. That is, unless you're happy being stuck on 10.9.0 until 10.10 comes out.

Stop spreading misinformation. You don't know for sure.
Score: 14 Votes (Like | Disagree)
petvas Avatar
158 months ago
I do know for sure. You can't upgrade the old GM build to the new version. It forces you to do a clean install.

not true. You can update with no issues. I updated both my laptops today..
Score: 12 Votes (Like | Disagree)
petvas Avatar
158 months ago
I have posted this 10 hours ago.
https://forums.macrumors.com/showthread.php?t=1656469

Why do Macrumors need another thread for that?

I also tipped 9to5Mac...
Score: 11 Votes (Like | Disagree)
juanmanas Avatar
158 months ago
I have posted this 10 hours ago.
https://forums.macrumors.com/showthread.php?t=1656469

Why do Macrumors need another thread for that?

I also tipped 9to5Mac...

Are you in need of affection or public recognition?
Score: 10 Votes (Like | Disagree)
Tyler23 Avatar
158 months ago
Typically I would say yes, it will expire and require a reinstall only because you wont have the "official gm" that will ship to the public. In essence, the original gm becomes a beta that expires.

OS X Developer Previews do not expire.

GM builds are built to be the final version. Updates are only issued if there are major problems. Not only do Developer Preview's (betas) not expire, but a build built to be the final version definitely does not expire.
Score: 10 Votes (Like | Disagree)