Set to have its official debut next week at this year's Detroit Auto Show, images of the all-new 2015 Subaru WRX STI have apparently found their way online ahead of schedule. As of now, specific details regarding its powertrain and other performance specs are unavailable, but it's been rumored to be powered by a turbocharged 2.5-liter boxer four that'll have an output of around 300 hp and 290 lb-ft of torque. No word yet from Subaru regarding these photos, but they look like the real deal to us.