I submitted a request to BMW Customer Relations on bmwusa.com and got this message in response, so what we can see here is that BMW is aware of the problem
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Rony:
Thank you for contacting BMW of North America, LLC regarding your 2009 BMW 335xi. We appreciate your inquiry.
Unfortunately, the 3.0 version of the Apple iPod software is currently not compatible with the BMW. BMW is currently researching to see what is able to be done with the software levels to assist with the compatibility to the iPod. I apologize for any inconvenience this may cause. Please stay in touch with
www.bmwusa.com and you dealer for any further information as it becomes available.
If you have any further comments or questions, please respond to this e-mail or contact the Customer Relations and Services Department at 1-800-831-1117, Monday through Friday from 9:00 A.M. to 9:00 P.M., Eastern Standard Time. Again, thank you for contacting BMW.
Sincerely,
Christa McGrew
Customer Relations and Services
Representative