edited. So far as of Jan 8, 2013, the Pioneer has announced the cable will release in spring. Info is below. In the mean time, the Apple Adapter for the iPhone 5 DOES work.
EDIT 3: Below is info from pioneer about the adapter Here is the link to Pioneer's site, or read below http://www.pioneerel...o Mode Products
EDIT 2: Looks like it works with the adapter!!