The Ryze splash art isn't updated on the official league page

Good catch. They also haven't updated his abilities.

http://na.leagueoflegends.com/en/site/guide/ryze.html http://gameinfo.na.leagueoflegends.com/en/game-info/champions/ryze/

There are a ton of other issues with the New Player Guide and Game Info in general too.

They are really REALLY slow on updating this kinda stuff, eventually in like 5 months they will tho :P