Skip to Content

Apple Seeds Mac OS X 10.5.4, Final Release Expected in July

Apple has seeded a second version of Mac OS X 10.5.4 to developers today. While the latest build (9e12) fixes a dozen more issues in Mac OS X Leopard, the biggest new feature to be supported will be Apple's recently announced MobileMe service. MobileMe is Apple's .Mac replacement service which will allow users to sync contacts, email, and calendar across various devices. It also provides advanced web applications to access your information anywhere with a web browser.

Apple has announced that MobileMe will be launched in early July. Apple's system requirements for MobileMe include Mac OS X 10.5.4 as well as iTunes 7.7, so we expect these two updates to also be released in early July.

Apple provides a Frequently Asked Questions document for existing .Mac customers who will be transitioning to MobileMe.

Update: The system requirements for MobileMe also list 10.4.11 as being compatible, but "some features require Mac OS X v10.5 and iLife 08."

Popular Stories

Apple Event Logo

Apple Released Seven New Products Today

Wednesday March 11, 2026 7:05 am PDT by
Starting today, the seven new Apple products that were announced last week are available at Apple Stores and beginning to arrive to customers. The colorful MacBook Neo and all of the other new products are on display at most Apple Store locations around the world starting today. Apple Stores have inventory of the new products for both walk-in customers and Apple Store pickup, but...
iOS 27 Mock Quick

10+ New Features Coming in iOS 27

Friday March 13, 2026 2:13 pm PDT by
We're only three months away from Apple's WWDC 2026 event, which will see the company unveil iOS 27. With the fully revamped version of Siri possibly delayed until September, iOS 27 is shaping up to be the update we wanted iOS 26 to be. There will be new Apple Intelligence features, updates for the iPhone Fold, and more, with the latest rumors summarized below. Foldable iPhone Features...
iOS 27 Mock Quick

iOS 27 Will Reportedly Be Like Mac OS X Snow Leopard

Sunday March 15, 2026 9:42 am PDT by
In his Power On newsletter today, Bloomberg's Mark Gurman reiterated that iOS 27 will be similar to 2009's Mac OS X Snow Leopard, in the sense that one of Apple's biggest priorities is bug fixes for improved performance and stability. At WWDC 2008, Apple showed a presentation that said Mac OS X Snow Leopard had "0 new features," as it opted to focus on performance and stability...