First things first: the render above is NOT official but rather a fan mockup of Kia's upcoming (rumored) RWD Sports Car based off the Genesis Coupe platform.
The details below are from a (reputable) guy on the VWVortex forum. As you can imagine, the picture above is making the rounds:
"This is the car I mentioned ages ago, and that has been long rumored on the Kia forums.
While it is based off the next-gen Genesis Coupe platform (hence the rumored optional AWD), it's not just a reskin. It's smaller with a shortened wheelbase. It's also only going to offer a choice of four-cylinder engines, both most likely taken from the Optima. And the diesel is for the European markets, where it'll be needed to compete with cars like the Scirocco.
Both transmissions (the 8-speed automatic and the 6-speed manual) would be new. Hyundai currently sources its manuals from Aisin (Toyota), and being as that's one of the last Toyota-sourced components, I fully expect they'll drop it for a new, in-house designed model. There's also a new Hyundai Mobis 10-speed automatic in the works that will debut on the next-generation Genesis sedan.
Basically, Hyundai seems to feel that in trying to make the Genesis Coupe both a spiritual successor to cars like the 240SX and a legitimate competitor to larger coupes like the Mustang and BMW 3-series, it hasn't done either as well as it would like. So it's splitting off the lower end for this Kia coupe, which would be cheaper (priced between a Veloster and a Genesis Coupe), while the Genesis Coupe moves upscale. And yes, that means the next-generation will be likely getting a V8 (Hyundai does have a supercharged 5.5-L Tau putting down 600 hp that could use a good home).
As with every new Hyundai product, reducing weight will be important (which is cool, because the current Genesis Coupe isn't exactly very porky from a platform perspective). And, of course, handling will be once again a concern, so I'm sure Lotus will be back to help with the tuning.
Oh, and one other thing--this car will probably replace the Forte Koup in the line-up. Spy shots have already surfaced of the next-generation Cee'd/Forte, so that car is pretty close to done anyhow."
Personally, I have no doubts that Kia will get its own Gen Coupe, but to replace the Koup all together?...