I have several devices in my bluetooth list and all of the profiles came over with the upgrade.
Two devices, my laptop and SYNC in my Ford car, you could not do anything with. Can't view properties. Can't delete. When I connected with my laptop, it seemed to work ok, but while connected, the screen on the Berry went berserk with icons scrolling left and right instead of up and down and the icons at the top of the screen crushed into about 1/2 inch of screen. When I broke the connection, all returned to normal.
With SYNC, Bluetooth audio worked fine but telephone audio would not switch to the car. Normally I would delete the profile and re-sync, but since I can't, this issue will be a deal killer and I'll be going back to 4.7 tonight.
Maybe if I get time, I will do a clean install or delete the profiles before I upgrade to see what happens.
Lastly, regular bluetooth headset (Jawbone Prime) worked fine. Audio comparable to 188.8.131.52
Z10 and PlayBook <- 9650<- 9630 <- 8330 <- 8130 <- 8830 <- 8703e <- 7130e <- 7250