There have been a few times raised the quiestion about the next generation of WRX 2014 as a separate model. It means that the new Impreza will not have its own charged version in the future.
WRX mustn't be a prefix for Impreza sedan or hatchback any more, it would separate name for unique model of Japan brand. It's expected more powerful engine of the same size, more sporting suspension and slightly higher position in the line of sports cars for public roads.
There could be different body types for WRX model, even something like wagon
Official data regarding specs, appearance, price and presentation dates of the new model is not announced yet, but the there is already a lot of rendered images of Subaru WRX 2014 model year.