If you take a quick peek at Blizzard's World of Warcraft "Under Development" page, you could catch a glimpse of the new raid dungeon area that they're currently working on. The Black Temple, as it's called, is announced as non-linear (you can go straight to the last boss), sporting a level 70 requirement sign.

Part of the Shadowmoon Valley area, this 25-person raid dungeon was supposed to be one of the raid dungeons included in WoW: The Burning Crusade at launch. But pressed for time, Blizzard released TBC without the Black Temple area. It seems they don't want to delay the content anymore and plan to ship it in the next patch.

Originally a Draenei temple, this foreboding structure has changed hands several times and this time is under the control of ill-fated Illidan and his minions. This historical site is where the Orcs formed their blood pact with Mannaroth, where necromancer Ner'Zhul's cult resided, and the staging area for the Burning Legion's return.

The big baddie at the end of this new raid grind is Illidan himself - you know, Illidan Stormrage, the Night Elf Demon Hunter turned demon. Don't be too confident about taking him out with an uber-level 70 party - even if he's blindfolded. Blizzard is making sure that he'd be a challenge to all players, even level 70 avatars.

The raid dungeon promises to give you access to hundreds of new items, including tier-6 armor and other rarities.