MStark

I'm shopping for a well optioned late model S8Plus, but haven't been able to find the right one. Ideally, a black on black one with most of the option groups including B & O audio (I have that in my D3 A8 and love it!) with the possible exception of night vision. It's my understanding that very well equipped Audi North America executive cars come on the market from time to time. Can someone give me a clue how one would purchase one of those?