Dealer installed new bt/assist today.
It's a part number I haven't seen here yet which is 84-10-9-122-529. It should be the latest but I've no way of knowing for sure. I was able to load my phonebook but because this is all new to me I have yet to learn or try the voice recognition feature. This part was less than $700 and I was able to bring home the old assist module from my 04 X5 in a box.

I also learned of the new back-up cam offered for the X5 from BMW today!