I just got my B service at Autowest Acura of Stevens Creek (in San Jose, CA), and they said they will be getting the Ipod integration kits in March 2006. It looks like not all dealers will be getting it at the same time.

At this current time, there is no confirmation that it will also work with the 04/05 models, but the service advisor did mention to me that they will tinker with it to see if it will work. Obviously it benefits them to be able to sell it to a wider audience (all of 3G instead of just '06).