A forum member over at TheMustangSource claims to have seen some concept drawings and models of the 50th anniversary 2015 Ford Mustang in various phases of development. Like any Mustang enthusiast would do he put his amateur artist skills to the test and this illustration is what he came up with.
As the drawing shows the front of the 2015 Mustang illustration closely resembles the new Ford Fusion and the grille of the current GT500 with a little Evos flair thrown in. What you may also notice is the overall shape of the car looks very similar to the 2014 Aston Martin Vanquish which he says he used as a basis for his drawing because they look so close in design.
If this illustration is any indication of what the 2015 Mustang looks like I can say Ford is on the right track and may have another home run on their hands. Let me know what you think in the comments.
A high-contrast version of the same illustration:
Below I have posted a few photos of the 2014 Vanquish including an interior shot to give you some kind of idea of how the Mustang could look.