Buffed.de has one of the very first interviews up coming from the Leipzig's Games Convention 2007 over in Germany this weekend.
Players of World of Warcraft already know Stratholme and many hardcore players are great fans of the old Stratholme instance. Warcraft 3 players however know Stratholme from a singleplayer mission, in which Arthas travels to the city and sets all buildings on fire, kills the citizens and fights Mal'Ganis. In Wrath of the Lich King you fight at Prince Arthas' side, by travelling through the Caverns of Time. We are giving you the opportunity of meeting Arthas at a time at which he was not a great villain yet. You are "cleaning" Stratholme and igniting buildings!
So much for the Sunwell theories! This instance will be another 5-man targeted for a group of level 80 players. If you can't read German, MMO-Champion has kindly posted an English translation for your reading pleasure.
http://www.mmo-champion.com/index.php?topic=736.0