Performance
"The 2.5-liter turbocharged flat-four Boxer engine in the WRX delivers its maximum torque and horsepower earlier than the previous model, with 224 horsepower @ 5,200 rpm and 226 lb.-ft. Of torque @ 2,800 rpm, a full 800 rpm earlier than the previous generation WRX."
Power and Torque are therefore the same as the current model, except that the torque arrives 800rpm earlier. The hatch version is 60lbs lighter than the outgoing WRX as well I think. Thats 167kw in a car that weighs 1425kg. The STi will apparently be a whopping 300hp though.