14 DAY TRIAL // Finally, the message we've all been waiting for has arrived: "The Mac OS X 10.5.3 Update is recommended for Mac OS X 10.5, 10.5.1, and 10.5.2 Leopard." You may recall that the latest Mac OS X build contained just one fixed issue, hinting at a very close release of Apple's maintenance update for Leopard users. You can update your Mac's software right now, following this address, or using Software Update in the Apple Menu -> Software Update.
Apple Mac OS X Server Update 10.5.3 along with its security package (Security Update Server 2008-003) have also been released. Plain security update 2008-003 is also recommended for all Leopard users and improves the security of Mac OS X, Apple says. "Previous security updates have been incorporated into this security update." The 10.5.3 Server Update is aimed at all servers running Leopard Server. If this is you, Apple would like you to update.
Apple reveals that Mac OS X 10.5.3 "includes general operating system improvements that enhance the stability, compatibility, and security of your Mac." The Cupertino-based corporation assures Mac OS X 10.5 Leopard is packed with "over 300 new features, installs easily, and works with the software and accessories you already have."
Following three months of successive seeding, the latest build of Mac OS X 10.5.3 included just one new fixed issue - a Kernel performance fix. Build (9D34) asked Apple's developer community to focus on eleven areas: Audio Applications, Video Applications, 802.1X, Active Directory/Directory Services, AirPort, Back To My Mac, Graphics, Installer, Mail, Spaces, and Time Machine. The final build is now ready for you to grab in order to enhance the stability, compatibility and security of your Mac.
Some 10.5.3 highlights include: improved 802.1X (Wifi) behavior and reliability when using Time Machine; fixes for Time Machine compatibility with Time Capsule; additional RAW image support for a number of cameras; improved Wi-Fi behavior and reliability when using Time Machine; VoiceOver Braille Update 1.0 which enables GW Micro, HandyTech, HIMS, Nippon, and Papenmeier Refreshable Braille displays; sync Mac Address Book contacts with Google Contacts.
You can see this page for more information about the Mac OS X 10.5.3 Update.