Recent weeks have seen the release of two new builds of Mac OS X 10.5.6 to Apple developers, namely builds 9G44 and 9G52. Leaked evaluation notes from the latter build lists 103 specific bug fixes that will be deployed with the official release of the software, now expected shortly before the holidays.
Some of the more recent code corrections target miscellaneous graphics corruption issues, problems with DVI and display detection, sluggish syncing services, printing PDFs from Mail, and a variety of MobileMe synching problems.
Separately, Apple has been working on Mac OS X 10.5.6 Server, which is slated for release alongside its Client cousin. Seed notes from one of the most recent builds, 9G46, show the company to have asked developers to focus their testing efforts on components such as Podcast Producer, Password Server, Server Manager, Single Sign-On, and AFP Performance.
Lastly, partial developer documentation reveals the most recent pre-release build of Mac OS X 10.6 Snow Leopard to be 10A222. Corroborating an AppleInsider report from last week, the notes show the software to have recently gained a new Grand Central developer API, while testing of Microsoft Exchange functionality in Mail, Address Book and iCal remains a focal point.
Additionally, the notes show hardware support for Snow Leopard's 64-bit kernel to remain limited to Macs introduced during the first half of the year, namely the early 2008 Mac Pro, early 2008 iMacs, and early 2008 MacBook Pro.
Apple will extend 64-bit kernel support to additional Macs as Snow Leopard development progresses.