Yesterday, Oct. 5th. Apple seeded the new Mac OS X 10.6.2 Build 10C514F to developers for testing.
This build is said to have dozens of bug fixes and even performance increases in many areas such as:
Address Book, AppleScript, AppleScriptObjC, ATS, ColorSync, Component Manager, Core Animation, Core Audio, Core Chinese Engine, Core Data, Core Graphics, Core Text, File Manager, Garbage Collection, Graphic drivers, Help Viewer, ImageKit, IOHIDFamily, Networking, NS Image, OpenCL, OpenGL, OSA, QT Kit, Speech Recognition, Sync Services, and Xtype.

However, this build does include some issues such as:
optical drives: that they may not be recognized and the eject key may not eject the media, and that DVD Player may hang.
Since this build has some issues, Apple is probably going to seed another build to developers to solve those problems.