That's not the actual production EVO X. The lights ,wheels, door mirrors, bonnet, front splitter and wheel arches are all slightly different in the actual production car and the end result is a much softer look that that prototype.
The new STI like all Scoobys will look much much better in the metal but it will never look as good as the P1, 22B or S204.
I still think a saloon version of the new STI would look amazing but Subaru will only make one if ther is overwhelming demand for one from the US where they hate Hatchbacks.