I just ordered a 5500 which I assume will come as an 08 when production is started... . I don't have a clue on pricing at this time but we were able to build 2 trucks earlier this week..... and I'll order 1 right away...
See my post under the 6. 7 L engine thread started by Disman regarding the 4500 and 5500 trucks. .
I can only assume if they've turned on the switch for these trucks that its on for the other trucks as well. .