I've been using the 3.0 upgrade for about 2 weeks nowin my F90bt.
Pros:
Radio is almost instant after startup.
Maps look better and the sign board is very helpful.
MSN Direct 100 times better than before.
Cons:
If I get a phone call while connect by BT the screen will revert back to maps which is very annoying.
BT still takes forever to connect. I could a mile away from where I started and the BT still won't be connected.
Over all I am pleased with the upgrade, and now might actually keep my F90bt in my daily driver rather than my weekend car.