Also in the advert for next weeks edition it says:
"Audi RS3 - First full details of the (real) worlds most desirable new car."

Nothing on the RS4.
Obviously none of this means anything is true but Autocar seem to be pretty good when it comes to future cars - also if the RS6 is going to have turbos then why wont the RS4?
Dunc
PS They also have a major piece on the new M5 - looks the dogs