I picked this up at a local nursery. There was no sign saying what it was, and the attendents didn't know. I am posting in the perennial forum too as I don't know which it is. My guess is an annual though. It looks like a type of daisy. I thought African daisy, but the leaves don't match the photos on PlantFiles.
My camera doesn't show the true color of the flower. It is more of an intense, electric purple. It is about 10-12" tall. Notice what the leaves look like in the photo.