It would be strange that the S6 have V10 but not the comming RS6.. ..


S4 B7 V8 4,2 - RS4 B7 V8 4,2
S4 B5 V6 TT - RS4 B5 V6 TT
S6 V8 4,2 - RS6 V8 4,2 TT

So..
New S6 V10 - New RS6 V10 or w/TT ??