I haven't heard anything so far. I'm really hoping they do though so I can throw together either the female player character or a fennekin gijinka cosplay for it.
Natsume(Tokyo Ravens)|Wukong Gudako(Fate/Grand Order)|Nefertari(Fate/Prototype: Fragments of Blue and Silver|Ibaraki(Fate/Grand Order)|Ruler Martha(Fate/Grand Order)|Player Character(Pokemon Sun/Moon) ~Twitter~~Facebook~~WorldCosplay~~Cospix~~ACP~
You would be an adorable fennekin I think ^_^. I'm not sure who/what I would cosplay as yet. Though I did enjoy being Professor Juniper at the last one. It is such a comfy costume to walk around all day in. Maybe they'll have another female professor in X and Y!