I'm assuming it's a small one so it won't be too many items. Just curious!

...included in your RS6. There is a small service manual booklet, which tells you exactly what gets changed. I get it stamped by the dealership when I take it in for service.
I can't remember what gets done, but I do believe that spark plugs get changed at this time.

Oil/filter, pollen filter, New plugs, for starters

RS6's had a different service schedule in the booklet and AoA came out with a revised plan. Does anyone remember that?

oil/filter, air filters, fuel filter, pollen filter, plugs. Those are the major items.