Mac OS X 10.2.1 includes “enhancements and improvements to the following applications, technologies and components: Mail, Image Capture, Help Viewer, graphics, printing, networking, Rendezvous, Kerberos, USB, FireWire, SCSI device compatibility and includes additional Digital Hub peripheral device support.” 10.2 users should use the Software Update pane of your System Preferences to update to 10.2.1.
Update – 10:03 PM: the “Mac OS X Update 10.2.1: Information and Download” AppleCare Knowledge Base Document(s) have been posted here.