Two separate questions..

Are you seeing any info out there on Audi Exclusive ordering options for the A7 (aside from the usual of paying $2500 to get a non-standard color).. Any leather/trim options, etc.?

Secondly, I have a set of 18" winter wheels for my S5. Do you know whether they'd fit an A7 (especially if I went with the 20inch S-line summer wheel package)??

I do not see any exclusive options other than the normal Paint to order. You can have your sales rep write an email to Audi to see if they would be willing to do a special order interior.

The only way to know for sure on the A7 would be to have the dealership try putting your 18 wheel on their in stock demo. They should be willing to do this as a courtesy. The hub diameter may be different. Hope this helps.