This new build focuses on graphics drivers, trackpad preferences and virtual machine creation. Good news: like the preceeding beta, this new version lists no known issues, reinforcing expectation Apple will ship the new OS imminently.
As previously reported, one serious bug fixed in this release is the one in which guest account problems could see users losing all the data held in their regular accounts. The update also ushers in native support for the new Magic Mouse.
Tweaked components include: AppleBacklight, Battery Menu, Dictionary, Expose, FileSync, Family Controls, Fonts, Front Row, HFS, Inkwell, iPhoto, MobileMe, OpenCL, Parental Controls, QuickTime, Screen Sharing, Spell Checker, Spotlight, Time Machine, and USB.