Sona, Vi, Garen and Zed have had their teasers re-added to their pages.

http://gameinfo.euw.leagueoflegends.com/en/game-info/champions/garen/ http://gameinfo.euw.leagueoflegends.com/en/game-info/champions/sona/ http://gameinfo.euw.leagueoflegends.com/en/game-info/champions/vi/ http://gameinfo.euw.leagueoflegends.com/en/game-info/champions/zed/

We've all seen the teasers by now, but it's come to my attention that they've all returned to their pages, likely indicating that the new champion will be revealed in the coming days (if that wasn't already obvious). This is just an FYI more so than any announcement or anything. If you missed the experience of seeing these teasers on the site, then go see 'em now!

As a note, nothing is different with the teasers as far as I can see, other than they're all available at the same time.