The 10.2.5 Update delivers enhanced functionality and improved reliability for the following applications, utilities, services, and technologies: Address Book, AirPort, AppleScript, Bluetooth, Classic compatibility, Disk Copy, Disk Utility, Finder, Help Viewer, iChat, Image Capture, IP Firewall, Kerberos, Mail, OpenGL, Print Center, Rendezvous, and Sherlock. The update includes improvements to AFP, Web services, dial up connections over PPP, and Windows file services, as well as audio, disc recording, graphics, and printing improvements and USB, FireWire and SCSI device compatibility enhancements. The update also provides updated security services and includes the latest Security Updates.
Detailed Mac OS X changelog Apple Update website