Today Blizzard released a gameplay trailer for World of Warcraft: The Burning Crusade. This trailer features the first dungeon players will come across in the expansion - Hellfire Citadel. It shows off shots of all three instances - Hellfire Ramparts, The Blood Furnace, and The Shattered Halls - with actual action scenes from the initial NPC encounters in The Shattered Halls.

You can view the video here, and of course see the official release announcement on the World of Warcraft main page.

> On the blasted world of Outland, within the heart of Hellfire Peninsula stands Hellfire Citadel, a nearly impenetrable bastion that served as the Horde's base of operations throughout the First and Second Wars. For years, this gargantuan fortress was thought to be abandoned - until the recent discovery that marauding bands of fel orcs have made Hellfire Citadel their home. Though the origins of this particularly savage breed present something of a mystery, what's more disconcerting is that the numbers of these fel orcs seem to be growing... > > Hellfire Citadel is one of the first new dungeons that players will encounter in The Burning Crusade. Watch our new gameplay trailer, which showcases the look and feel of Hellfire Citadel's three 5-man wings.