I noticed the little tag in the bottom left of the picture, and it turns out that it is a signature.
It read "Nox Iz Mad", so I followed my best judgement and went to Noxizmad.com. I found some good ****. Turns out the guy who did the artwork is a freelance artist who was presumably hired by Riot. Whether the 'Nix' guy is actually designing the skin or just doing the artwork awaits to be seen, but god I hope he is designing the skin. His art is pretty cool too. Feel free to check it out.

Thought this was kind of interesting. Looks very DotA-2-esque to me. I don't play Galio, but the skin is cool never-the-less.

-Bodacious27