Maybe someone forgot to tell the design department they don't own Aston Martin anymore.
But they do have one of the main designers from Aston Martin
Actually, there probably won't be a 2015 GT500. It looks like it will be discontinued because the 5.8 L engine apparently won't fit in the new reduced size body. Shelby is discontinuing the GT350 this fall, and it looks like a new Ford GT350 will replace the GT500 in the standard Mustang line-up.
2013 Mustang GT Premium Convertible
Candy Apple Red, Auto, FRPP Tune, GT500 Axlebacks, KONI Yellow Sport (adjustable dampers), FRPP Front and Rear swaybars, Custom Removable 4 Point Roll-Bar, BOSS 302 Low Expansion Brake Lines, Roush side splitters, GT500 spoiler, Redline Tuning hood struts,18" Ford Chromed Aluminum Wheels (9R3Z-1K007-A), Michelin Pilot Super Sports - 235X50X18
2011 Mustang V6 Premium Convertible - Gone