Apple Begins Seeding Mac OS X 10.6.3 Build 10D522 to Testers - MacRumors
Skip to Content

Apple Begins Seeding Mac OS X 10.6.3 Build 10D522 to Testers

Apple has reportedly begun seeding Build 10D522 of Mac OS X 10.6.3 to a limited set of developers, marking the first official beta version of the third maintenance release for Mac OS X Snow Leopard. According to those familiar with the release, Apple has addressed approximately 225 issues in the update, which reportedly weighs in at roughly 666 MB.

Apple documents four remaining known issues in the current build, related to application updating, Displays preferences, iTunes hangs, and ColorSync Utility Filters.

Word surfaced nearly a month ago that a 10.6.3 beta release was imminent, but Apple apparently decided not to push any testing versions to developers until after the holidays. Apple's last update to Snow Leopard, Mac OS X 10.6.2, was released nearly two months ago.

Popular Stories

Apple Event Logo

Apple's Next Era Begins September 1

Thursday May 7, 2026 10:36 am PDT by
Apple recently announced that Tim Cook will be stepping down as CEO later this year, after 15 years of leading the company. Effective September 1, Apple's hardware engineering chief John Ternus will become the company's next CEO, while Cook will become executive chairman of Apple's board of directors. In his new role, Apple said Cook will assist with "certain aspects" of the company,...
Four iPhone 18 Pro Colors Mock Feature

iPhone 18 Pro Launching in September With These 10 New Features

Saturday May 9, 2026 6:03 am PDT by
While the iPhone 18 Pro and iPhone 18 Pro Max are not launching until September, there are already plenty of rumors about the devices. It was initially reported that the iPhone 18 Pro models would have fully under-screen Face ID, with only a front camera visible in the top-left corner of the screen. However, the latest rumors indicate that only one Face ID component will be moved under the...
MacBook Pro Low Angle Wide Lens

macOS 27: Two More Changes Leaked Ahead of WWDC Next Month

Sunday May 10, 2026 9:45 am PDT by
macOS 27 will have a "slight redesign" compared to macOS Tahoe, along with an option to automatically group tabs in Safari, according to Bloomberg's Mark Gurman. In his Power On newsletter today, Gurman said the design changes will help to address some of the criticism surrounding macOS Tahoe's new Liquid Glass interface. In particular, the changes should improve overall readability....