Mustangs are meant to be inexpensive. Ford is in need of a modern luxosport coupe for Lincoln. They couldn't call it 'Mark IX' or 'Mark X,' though, now that the MKX CUV is here. [How confusing!]
Then again, with the Jaguar XK, who needs Lincoln? It depends who you ask ... some people believe Ford is trying to sell Jaguar. I don't see it happening, because there are no buyers (for Jaguar, not for personal luxosport coupes).