Software Update was successful but it did squash my VoodooHDA-2.8.8 driver.
When trying to reinstall the driver it said the VoodooHDA-2.8.8 driver was not supported on this version. It still let you try anyway and I did but then received Kext Error. I used Kext Utility to repair and things seem ok but no Sound driver. Restarted machine and still no Sound, still greyed out. Rebooted with USB stick, started Machine OS and installed VoodooHDA-2.8.8 with no issues. Sound was back immediately. Restarted machine without USB stick and sound appears to be working fine.
One other note, I had to originally install the VoodooHDA-2.8.8 driver prior to enabling the partition to be bootable. On my old rig that means I had to use fdisk440 to make my partition bootable. If you try installing the Sound driver after you make your partition bootable I received the same error that the driver is not compatible and I could not get sound to work.