It's basically a whiteheaded Gogoat with its profile facing to the right. The small black dot in the white area is its eye and behind it is a normal Gogoat.
It's so cute. More likely a pre-evo then. But then again, remember the picture that WPM posted about the supposed Fletchling evo and it turns out it was just some weird angle that made it look big? Perhaps it's the same here... deceptioooooonnnn