If you're concerned about iPod integration:
As far as I know the AUX port to connect your iPod is an option so the model year alone does not gurantee you the AUX port
However: look here:
http://www.bavariansoundwerks.com/ where you can but very nice aftermarket iPod / Phone / Sat Radio integration for BMW (I just ordered the iPod integration and the Sat Radio from them for my new X3)