Anybody notice this in the top right? It looks like the heroine, but she doesn't have a hat and the hair is different (isn't covering the shoulders).
Also, check out the Characters section on the X & Y website, if you haven't. It says "At certain points you'll be able to get new outfits and accessories for your Trainer!"
http://www.pokemonxy.com/en-us/characters/
I don't know if anyone else felt like the 3 different skin tones/eye and hair colors were the only options, like I did, but this is really awesome and reassuring. It no longer seems like very limited character customization. Definitely looking forward to this!