I know how frustrating it can be to look online and find no info so here is my experience with my new iTouch 64 gb 3rd gen. and the Avic d3 with the pioneer ipod cable (cd-i200).
iTouch version 3.1.2, not jailbroken (yet ) the iPod will work with the d3 by this I mean iPod control on the d3 works, but it will NOT charge it. Next is the scosche passport I will try to get it in the weeks to come and as soon as I get it I will test it out and write my experience on here.
(yes I know its my first post but i am an avid lurker )