Mac OS X 10.6.5 Build 10H574 Seeded to Developers

Apple continues to work on Mac OS X 10.6.5, issuing a new version known as Build 10H574 to developers today. Just this past Friday, Apple pushed out Build 10H571, with the build of increment of three since that time suggesting that Apple's engineers have likely been working through the weekend to prepare for a public release. No details on changes included in the latest build have yet been revealed.
The public release of Mac OS X 10.6.5 is expected to come nearly simultaneously with a release of iOS 4.2, as Mac OS X 10.6.5 is required to support certain aspects of the AirPrint functionality coming in iOS 4.2. The golden master of iOS 4.2 was issued to developers one week ago and is likely simply awaiting finalization of Mac OS X 10.6.5 before release.
Notably, Apple has already seeded its first developer build of Mac OS X 10.6.6 with hints that that version will be required for support of Apple's forthcoming Mac App Store. The early developer seed of Mac OS X 10.6.6 and the small file size (3.7 MB) suggest it will see only minor changes and may follow closely on the heels of Mac OS X 10.6.5.
Popular Stories
Apple is developing an all-new operating system codenamed "Charismatic," according to Bloomberg's Mark Gurman.
Apple smart home hub concept
This is likely Apple's long-rumored "homeOS" operating system.
In a report this week, Gurman said both Apple's rumored smart home hub in 2026 and tabletop robot in 2027 will run the new operating system. He said the software platform will blend...
Last week, Apple released and then pulled a software tool that accidentally contained identifiers for many unreleased devices and chips, according to MacRumors contributor Aaron Perris. His findings included new models of the Studio Display, Apple TV, Apple Watches, Apple Vision Pro, iPad mini, HomePod mini, and more.
Here is what was uncovered in the file, according to MacRumors contributor ...
The seventh developer beta of iOS 26 is now available. While we are now in the later stages of the iOS 26 beta cycle, there are still some changes.
Below, we outline everything new that we have found in iOS 26 beta 7 so far.
Redesigned Blood Oxygen Feature
The seventh developer betas of iOS 26 and watchOS 26 include a redesigned Blood Oxygen feature on Apple Watch Series 9, Apple Watch ...
Alleged images of the iPhone 17 Pro Max's internal design have surfaced, offering a potential look inside the device before it is announced by Apple next month.
The images were shared by the account "yeux1122" this week, in a blog post on the Korean platform Naver. The account aggregates Apple rumors and leaks, so it is likely not the original source of the images, and it is unclear if they...
Apple is expected to delay the launch of its base iPhone 18 model until spring 2027, marking a major shift in the company's long-established release cycle, according to South Korea's ETNews.
The report claims that Apple has informed some of its suppliers that the iPhone 18 will not be part of the September 2026 iPhone lineup. Instead, the company will unveil only higher-end models in the...
At least one new Apple Watch model launching next year will feature a "significant redesign," according to Taiwanese supply chain publication DigiTimes.
In a paywalled report this week, citing supply chain insiders, DigiTimes claimed that a high-end 2026 Apple Watch model will feature "exterior design" changes, including but not limited to "eight sensors arranged in a ring pattern visible...
As we wait for WWDC to kick off next Monday, Apple today announced the winners of its annual Apple Design Awards, recognizing apps and games for their innovation, ingenuity, and technical achievement.
The 2025 Apple Design Award winners are listed below, with one app and one game selected per category:
Delight and Fun - CapWords (App) and Balatro (Game)
Innovation - Play (App) and PBJ -...