Thank the Volkswagen ETKA online parts catalog for this leak which shows an SQ5 3.0 Quattro with 354 horsepower scheduled for May 2013. This online VW database has been responsible for several leaks in the past which have all proven true such as the TT-RS and the 4.0 TFSI twin turbo 4.0 liter V8 motor and output figures for the S6, S7, and S8.
With this motor already in the USA and the SUV market proving very popular with luxury performance variants it is almost a sure bet that this will be sold in the USA. Additionally, this would mean Mercedes and BMW would not have a competitor. An M variant of the X3 and an AMG variant of the GLK would almost certainly need to come in order to compete if Audi gets this leg up.
AudiBoost will bring you more details on this story as it develops and this certainly is exciting turn of events for those disappointed this model would not be available in the United States.