Windows certified drivers which give higher compatibility, and there are no warning message on driver install because of this. There is also no need to burn a driver disk, as the drivers come on the Leopard disks.
I can tell ya what didn't get fixed. When you have to reboot from windows you have to power down fully since after the startup gong the screen just stays black.
Also I still can't figure out how to turn off the volume beep in Vista.