My Bluetooth disappeared after I applied the update and restarted. Rather, the menu applet was gone. I had go to go System Preferences to turn it on and off. Odd, I thought. I restarted and Bluetooth reappeared, directly to the left of Spotlight. It was turned on and appeared as if it was just noticed for the first time, however all my old pairing data was intact. Just thought it was a bit odd. In any case, all is well now.