It looks like Ford won't waste any time to enhance the range of its new 2015 Mustang when it goes on sale late next year, as according to a purportedly official "2015MY Ford Body Code Types" chart that trickled to the Mustang6G forums, there will be a Shelby Coupe and Convertible.
Regarding the Shelby versions of the 6th generation Mustang, the word on the street is that, they will carry the Shelby GT350 moniker with a recent screenshot from Ford’s dealer promo order system that popped up the SVTP forums supporting the story.
The poster of the screenshot noted: "So I just went to order 2015 promo stuff, they list all 2015 models for vehicle photographs and guess what, there is a Shelby GT350 listed!!!!!!! oh by the way, this is dealer promo stuff so its legit, not a shelby ship thru package."
An older report from MustangDaily had said that, the new factory GT350 will use Ford's 5.0-liter Coyote V8 offering more power than the 420+hp GT, but less than the insane GT500 of the outgoing Mustang with its 662-horsepower blown 5.8-liter V8.
As far as the other models in the 2015 Mustang range, the chart does not list the 305hp+ 2.3-liter turbo engine as an option, but this could be explained by the fact that Ford may offer it as an upgrade to the V6.