As Kevio states, this has been available for quite some time. I know you can pick one up at the Hyundai Accessory Store (Gary Rome Hyundai) online. If you register, you can get an extra 11% off the sale price as well. I bought the Veracruz Bluetooth kit from them and was very satisfied with their service and support.
Here'a a link to the Auxiliary Input there:
Auxiliary InputI don't think Hyundai's communications to their dealers is that great; there seems to be a lot of confusion at the dealer level with respect to parts availability.