Kia is planning what sounds like a 4 door GT model which is scheduled to debut in 2018.
Details on 2018 Kia GT: Expect Four Doors and Performance | Car and Driver Blog
Beyond that, Biermann confirmed the development of a high-performance version, which we expect will use Hyundai-Kia’s 3.3-liter turbocharged V-6. That engine will also feature in future Genesis models, including the G70 being developed alongside the GT (both cars sit on Hyundai-Kia’s “CK” architecture.) In basic form, the turbo V-6 produces 380 horsepower, and it’s not hard to see that being tweaked to get close to the 427-hp BMW M4, which Biermann led development on while working at BMW M. “There will be a sporty version available with the level of performance … not far away from a real sports car,” Biermann told us in Korea. From his comments, we conclude that a V-8 option is unlikely: “We can get almost as much from a six-cylinder engine as we can from an eight-cylinder [and] of course there are other advantages in terms of weight, packaging and emissions.”
Details on 2018 Kia GT: Expect Four Doors and Performance | Car and Driver Blog