Riot , when will we see the next round of splash arts updates ?

So I was looking at some champs Splash Arts and I saw that some champs could really use some help, and other NEED help.

So, Xin, Swain, Pantheon, Irelia, Corki and Darius are all champs that, from where I stand have nice SA, but they just look downright old. They look nice, but badly outdated. I know I probably forgot some , so pls mention in the comments. PS: I would list Gp and Taric, but since they are getting a rework and a VU, with a new SA I hope, I didn't list them.

But then things get ugly. I am talking about Rammus, WW, Kennen and Anivia. What makes this so sad is the fact thet out of those 4, only 1 has a background in the SA, and even then, her's is really bad. Anivia looks really really old and wierd, Rammus and WW have no background and they might look ok and somewhat like their in game models, but again, they look so old. And then, there is Kennen, WELP. No background, and 2 of his 6 skins are a Ctrl C Ctrl V of his classic SA. Riot pls, help these champs out