Champion Pages of 'Deadeye' Teaser Champions

Jhin's long-awaited release has officially come today, yet I was surprised to noticed that the champion pages of Zed, Sona, Garen, and Vi are still afflicted with the teaser content. I've been keeping up with Sona's page for awhile to see when they'd pull the content (possibly as a pre-requisite to his release) and it's all still there. Are we waiting for some further development to come or has Riot not tidied up yet? Perhaps more lore?