Isn't Quoris based on current BH platform though? Where as 2014 Genesis is new platform, with available AWD, which I don't think Quoris offers. Also, while back end does look somewhat alike, on the spy pics, looking at back of b-pillar, quite different from Quoris and current Genesis. Looks more raked B-Pillar like current Azera. Current car's side glass ends at the doors, where as spy pic car's glass extends behind the door.
One thing I love about the Genesis is the 'airy' feeling you get from low beltline, large side glass, where as lot of new cars go for high belt line, low roof design, ala Sonata/Azera. Sadly, looks like as part of precision fluid Hyundai design it's headed in that direction.
On a positive note, at least rear end will hopefully look different from current car. As 2013 Honda Accord rear end looks strikingly simiar to Genesis. Parked next to one today, and couldn't believe how close they look.