Mac OS X 10.6.3 Build 10D573 Seeded to Developers

Apple is continuing its rapid-fire seeding of Mac OS X 10.6.3 builds today, pushing out Build 10D573 to developers. The new build is only a single increment over the previous build issued last Thursday. World of Apple details the seed notes, which reveal that Apple has asked developers to continue focusing on GraphicsDrivers, Images & Photos, Mail, QuickTime, and Security Certificates for testing.
The seed notes also reveal one additional fix since the last build, involving an issue with recurring events in iCal when working with Exchange servers. The new build also continues to carry a single documented known issue involving the reoffering of the Safari 4.0.5 update issued earlier this month.
We have continued to expect an imminent release of Mac OS X 10.6.3, but Apple's release schedule remains unpredictable as it puts the finishing touches on the update. Late last week, an iMac user reported receiving a prerelease version of Mac OS X 10.6.3 via Software Update. That version was the previous Build 10D572, and it is unknown why the user's machine was able to access the download, although it does suggest that work on Mac OS X 10.6.3 is very close to completion.
Popular Stories
Last year, Apple launched CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. Nearly nine months later, CarPlay Ultra is still limited to Aston Martin's latest luxury vehicles, but that should change fairly soon.
In May 2025, Apple said many other vehicle brands planned to offer CarPlay Ultra, including Hyundai, Kia, and Genesis.
In his Powe...
The calendar has turned to February, and a new report indicates that Apple's next product launch is "imminent," in the form of new MacBook Pro models.
"All signs point to an imminent launch of next-generation MacBook Pros that retain the current form factor but deliver faster chips," Bloomberg's Mark Gurman said on Sunday. "I'm told the new models — code-named J714 and J716 — are slated...
Apple is planning to launch new MacBook Pro models with M5 Pro and M5 Max chips alongside macOS 26.3, according to Bloomberg's Mark Gurman.
"Apple's faster MacBook Pros are planned for the macOS 26.3 release cycle," wrote Gurman, in his Power On newsletter today.
"I'm told the new models — code-named J714 and J716 — are slated for the macOS 26.3 software cycle, which runs from...
We are still waiting for the iOS 26.3 Release Candidate to come out, so the first iOS 26.4 beta is likely still at least a week or two away. Following beta testing, iOS 26.4 will likely be released to the general public in March or April.
Below, we have recapped known or rumored iOS 26.3 and iOS 26.4 features so far.
iOS 26.3
iPhone to Android Transfer Tool
iOS 26.3 makes it easier...
Apple recently updated its online store with a new ordering process for Macs, including the MacBook Air, MacBook Pro, iMac, Mac mini, Mac Studio, and Mac Pro.
There used to be a handful of standard configurations available for each Mac, but now you must configure a Mac entirely from scratch on a feature-by-feature basis. In other words, ordering a new Mac now works much like ordering an...