Shadow Isles champion teased in the Academy Skins Spashart?

So, getting champ teasered through skins artwork is nothing new, I mean just think of Jinx who appeared in the Poolparty skin.

My focus here is on the two figures behind the window that can barely be seen. One is a big male figure, probably Jayce or Sion - although Jayce might make more sense in this setting.

The other one seems to be female, but there is something weird about her: she does not have a neck! You can even see her upper body and notice that he head is in absolutely no way connected to the rest of her body. So maybe it's Orianna? Well, she usually has a neck apart from her Esports skin... also the long, very biological looking hair speaks against that.

Then it struck me: we have the Harrowing soon and there is one type of undead archetypes that we do not have as a champion yet: A Dullahan (or comnmonly called "headless knight/horseman". Now, despite the name, the head is not gone, just not connected to the body and it can speak in some variations of the story. Generally the Dullahan is seen as an omen of approaching death that could kill others with the touch of his hand (or cut off the heads of others, depending on tale) - Sounds pretty shadow isles to me, no?

Also, I'm not sure about the clothing in the Academy Splash... is this an uniform? Or more some kind of armor? It's really hard to tell...

Tl,Dr: Female Headless Deathknight confirmed!