Well I went ahead and hooked up my iphone/ipod today and took the chance. Here's a picture of the screen:
A couple of observations
1) The screen has this weird looking flare graphic of the progress in the song
2) The cover art is small but works
3) It SKIPS like crazy. I think the BUS issues someone was talking about regarding the amount of data going through is overwhelming the system. It is fairly embarrasing when people are in the car so probably not a good show piece
4) The navigation of songs works well from the screen and steering wheel.