Here we go....
Exclusive: New Hyundai Genesis Coupe Surpass 400hp Mark - The Korean Car Blog
"When Hyundai Motor America’s CEO was interviewed a few days ago during the New York AutoShow he said: “This all-new engine would arrive on the Genesis sedan in 2017 or 2018 and have power in the ballpark of the company’s 420-hp, 5.0-liter Tau V-8 but weigh far less.”
Coincidentally our source mention this engine will be ready for production in late 2017."