Apple this week seeded the first pre-release build of Mac OS X 10.3.4.
In a seed note, Apple said Version 10.3.4 should provide a performance gain when launching non-prebound applications. In addition, the update includes several changes that may affect device compatibility, specifically, TWAIN scanners, USB Flash Media, SCSI drives, iPods, and some PCMCIA cards. The update also reportedly incorporates updates relating to Audio FireWire and USB 2.0 connectivity for the iPod.
Version 10.3.4 also includes changes to Core Audio, OpenGL, Graphics, Core OS, and the High Level Toolbox, Apple told developers.
Apple also specified several known issues with the latest build involving Quartz Extreme and DVD playback, Safari table rendering, redraw problems, display resolutions, and System Profiler.
(source Think Secret)