I'm suprised.
Car and Driver claims they have leaked photos.
http://www.caranddriver.com/features/2015-ford-mustang-leaked-360-view-and-full-details-news
http://jalopnik.com/five-things-you-didnt-know-about-the-2015-ford-mustang-1453338830
From Jalopnik:

Car and Driver claims they have leaked photos.
http://www.caranddriver.com/features/2015-ford-mustang-leaked-360-view-and-full-details-news
http://jalopnik.com/five-things-you-didnt-know-about-the-2015-ford-mustang-1453338830
From Jalopnik:
Cheapest 500-hp Car?:Ford will launch the new Mustang with carry-over powertrains, but we predict the 5.0-liter V-8's output will rise from 420 to 500 horsepower within the initial 2015 model year.
10-Speed Schwing:
In 2016 or 2017, a 10-speed automatic transmission jointly developed by GM and Ford will replace the current six-speed auto. Expect a whopper of a ratio spread
Fantastic Four:
A 2.3-liter boosted four-cylinder, perhaps launched in concert with the 10-speed, will make this the first turbocharged Mustang since the 1986 SVO. Our oracles foresee 310 horses.
Europe Gets the IRS:
This will be the first Mustang—aside from the 1999–2004 SVT Cobra—to boast an independent rear suspension. Among its other benefits, an IRS will help to give the car credibility in the European market. 3P
8Hopefully they do better with the '15 than they did with the Cobra....I had an '03 and cracked the diff cover (as many did) and what a PITA to get the diff out.
You Got the Touch:A heavily revised MyFord Touch interface will make its debut here, featuring more hard buttons and redundant controls. Diggler approves.P
