Blizzard did say that they had plans to revamp some old Dungeons in the World of Warcraft, and this was evidenced in Cataclysm where Heroic modes were added to some classic Dungeons, like Deadmines and Shadowfang Keep. In the upcoming Mists of Pandaria expansion, Blizzard will be revisiting more classic Dungeons such as Scarlet Monastery, and Scholomance, and these changes have been previewed along with a host of new Dungeons that players can expect to encounter in the upcoming expansion. So if you'd like to check out the new (and old) Dungeons in Mists of Pandaria, head on over to Blizzard's World of Warcraft blog for the details.
Ubergizmo , World of Warcraft: Mists of Pandaria Dungeons preview released, World of Warcraft: Mists of Pandaria Dungeons preview released