ThinkSecret has posted that new builds of OS X 10.4 have been released to developers. The PowerPC build of the update is said to include some 500 bug fixes. Final release of 10.4.3 is not expected until September, according to the site.
The Intel-based Developer Transition Kits (DTK) have been seeded their first major OS update since release. The new build weighs in at 2.7GB and is a complete system replacement that brings the DTK boxes up to par with the PowerPC version. According to ThinkSecret, the build addresses not only bug fixes, but piracy concerns as well, rendering earlier Xcode 2.2 Universal Binaries useless after the update.