Looks like Audi are breaking the one RS model at a time rule:
Taken from topgear.com
November 27, 2007
More RS, vicar?
Audi's tuning arm, quattro GmbH (think M-Sport to BMW or AMG to Merc), has announced that it will step up production of RS models.
Traditionally, RS versions were only produced in the last two years of a model's production run, but quattro director Werner Frowein said this week that a change in strategy will mean RS variants within two years of the model launch.
Which means that we could see an RS version of the new TT very soon, with an RS5 to follow. And - here's where it gets really interesting - even the R8 in full RS-spec somewhere down the line.
However, it's not yet clear whether quattro will continue its policy of only producing one RS model at a time - a policy that requires some serious reconsideration. The more the merrier, we reckon.