2.4's not out today, but Blizzard threw a nice little consolation prize our way: A new Fury of the Sunwell preview page, complete with a trailer and a very spiffy looking wallpaper featuring Kil'jaedan rising out of the Sunwell while Kael'thas looks on, as well as an in-game cinematic trailer in which Kael'thas tells the story of the destruction of the Sunwell and speaks of his plans to reignite it and summon Kil'jaedan. if you're a bit unclear on the Sunwell Lore, this page explains it succinctly as well.
There's also a list of some of the new features, such as all the new daily quests, accompanied by screenshots. In what might be considered a bit of tease for WotLK, the screenshot for the Arena Tournament features a Warrior wielding the fabled Ashbringer (the corrupted version, but still!). It's also worth noting that we can add another Kralnor cookie to the growing list of them, the screenshot also features everyone's favorite staff-using Warlock.
Blizzard's done a great job with this page, although I have to wonder if this is a harbinger of more PTR time. It seems strange they'd only release such a well done preview page a few scant days before the patch goes live, but we shall see. It's fun to have some new eye candy to keep us occupied until the patch drops.