I can't help wrt the 07, but to offer this information...
I have a Pontiac GTP, and the one thing that frosts my ass more than anything is that there is no indicator on the dash when my cruise control is on. Trivial... I know, but when the light hits the dash a certain way... I can see it. Now this car has everything, and I have talked to enough GM reps about it, and I always get the same answer... The Canadian version didn't have this as an option, but the dash plate is the same one for those models that do. So, no dice.
I'm thinking this may be the same issue. Maybe there is a 10R manufactured for a country that has it... and it's just not available where you are.
I'm po'd now though because I haven't even seen that on my '06. Keep us posted if you find out anything.