"[Splash art] is always based on the in-game model" -Riot Baconhawk
This quote is from a couple days ago and isn't referring to the texture update from last patch, but that's what I'd like to talk about. Specifically, Ravager Nocturne. With the texture update, ravager was changed to better match the splash art (which isn't even the original splash). I can't think of any other reason why it would have been changed so drastically.
I bought the skin a long time ago because I really dug the jack-o-lantern feel, but then they changed the splash art and now with the texture update the skin I bought doesn't exist anymore. I'm not here to talk about which splash is better; I've only included the splashes to show what I'm talking about.