New splash arts for Mount Targon champions?

As many of you might know, the lore of Mount Targon and its champions: Diana Leona and Pantheon, have been updated recently. It has also been said that (all?) champions will get new splash arts to keep their appearance up-to-date with the in-game versions:

For a long while, we’ve been thinking about old splash art, specifically splash art belonging to the skins of previously updated champions. As you are likely aware, most champion updates have not been accompanied by comprehensive splash art reworks, creating a problem where certain splashes are outdated or inaccurate representations of what you actually see in-game. Luckily, we have a solution to this problem: Do. All. The. Splashes.

With many speculations about the 2 empty slots on Mount Targon, saying that the next champion will probably be one to fill one of those two slots, I'm wondering if they will give Diana, Leona and Pantheon the new splash arts sooner (aka a priority queue), to keep up with the updated splash art the new Mt. Targon champion will get. It would make sense, if they do so, Mt. Targon will be up-to-date entirely. I would look forward to that.

**What do you guys think? **

Sources:

1. http://na.leagueoflegends.com/en/site/mount-targon/story.html
2. http://euw.leagueoflegends.com/en/news/riot-games/editorial/talking-targon-foundations-team
3. http://euw.leagueoflegends.com/en/news/riot-games/editorial/dev-blog-updates-and-splash-art

Edit: New Mt. Targon champ confirmed: Aurelion Sol the Starshaper