Apple Seeds Mac OS X 10.5.3 9D34 to Developers
For the past two months, Apple developers have been testing the next version of Mac OS X Leopard. The latest Mac OS X 10.5.3 test version (build 9D34) was seeded just last week and only adds one kernel performance fix and contains no remaining "known" issues. Meanwhile, Apple's seed note list of the over 200 bug fixes since Mac OS X 10.5.2 has been posted by apcmag.
Once complete, the final Mac OS X 10.5.3 update will become available as a free update to existing Mac OS X 10.5 (Leopard) users via Software Update. No target date is set, but testing has been ongoing for two months and Apple's Worldwide Developer Conference (WWDC) is just around the corner (June 9th).