For one reason or another, Apple has re-posted the Mac OS X 10.5.7 Combo Updated for Leopard, without making any changes to the release notes and the additional documentation for the update. Most likely, it is an error on behalf of the Support team who, by mistake, re-posted the Combo Update originally released in May, this year.
On the Downloads section of the Apple web site, the Combo installer package is posted with the following post date - July 10, 2009 (screenshot above). In the list of recently added updates, the combo update was allegedly posted 07/10/2009. None of the two post dates are correct.
Released May 26, 2009, Mac OS X 10.5.7 is the latest incremental update to Leopard issued by Apple. The company is reportedly already gearing up for the release of an eighth such update, presumably getting out ahead of Snow Leopard (September).
In May, Apple posted both Client and Server versions of the Mac OS X 10.6.7 update, as well as the usual Combo package, which includes both OS X 10.5.7 and the latest security updates. The update was to be downloaded and installed as a single program, followed by a system reboot.
Apple says that “Mac OS X v10.5 Leopard is packed with over 300 new features, installs easily, and works with the software and accessories you already have.” Speaking about the 10.5.7 update in particular, the company claims it is “recommended for all users running Mac OS X Leopard version 10.5 to 10.5.6 [as it] includes general operating system fixes that enhance the stability, compatibility and security of your Mac.” On the same page, Apple also links to additional Support articles that offer detailed information on the new features and the security side of the update. The pieces in question are all but new.
Last Modified May 26, 2009, “About the Mac OS X 10.5.7 Update” is the same Support piece posted two months ago by the Mac maker. “For detailed information on Security Updates, please visit this website: Apple Security Updates,” Apple continues. As expected, the latest security tweaks are those included with the Safari 4.0.2 update issued just this week. Additionally, the Buy Now button takes us to the Apple US online store where customers can purchase “Mac OS X v10.5.6 Leopard.”
Of course, there’s nothing wrong with applying the latest updates from Apple (even two months after their release) if you haven’t had the chance to do so yet.