Uniden just released firmware upgrade a couple of days ago. I updated my 396 and 996 radios and I strongly suggest you do the same. For those in Edmonton who montior EPS/EMS/EFR EDACS system, you will notice that annoying trailing buzz after most transmissions is all but gone.
For those in Calgary who monitor CPS, the P25 audio certainly sounds better, not as good as GRE, but darn close.