Ulduar

Ulduar is the second tier of raid content introduced in Wrath of the Lich King. It's being pushed to live servers on 3.1 release, which is the first major content patch since Wotlk's release back in november. 3.1 release is due during 04/15/09.

Just like Naxxramas, Ulduar has a 10 and a 25 man version.

Also, I couldn't check yet about the map of the dungeon, but so far I got no idea in which order we have to kill them or if some are "optionnal". Some pretty nice info/map is avaiable here tho.

Bosses of Ulduar (Names link to the tactics for the boss when avaiable, with sometimes video) :

- Flame Leviathan is the first fight in Ulduar, taking places in vehicles
- Ignis the Furnace Master adds handling and staying out of fire - Alternate Strategy Guide
- Razorscale is a drake with air and ground phases, third encounter in Ulduar
- XT-002 Deconstructor robot with waves of adds, massive raid damage, and targetted AoE.
- The Iron Council a trio of bosses, that have to get killed in a specific order and will strengthen thoses left when they die. Another Strategy Guide
- Kologarn Here we gotta fight a static mob and his two arms guarding a bridge.
- Auriaya A pretty tricky pull/fight starting Strat !.
- Mimiron Bloody engineering nightmare. Fight in four phases : ground, mid air, aerial, then all of them combined. The 3 "parts" have to die at same time during fourth phase. Oh and there are adds, of course. Alternate Strategy
- Freya Another fight with adds / minibosses to handle Alternate Strategy
- Thorim Fight with two seperate groups through 2 gauntlets then on to the boss fight. Wowwiki page here.
- Hodir A Keristraza / Gruul like fight, with some npcs to help us and keep our healers busy :p Alternate Strategy
- General Vezax All mana regen is disabled for this fight. Strategy
- Yogg-Saron is the final boss before optional algalon.
- Algalon the Observer. No info on this one either, exept it's reffered to by Blizzard as "Alagalon the Raid Destroyer". Access to this boss is given through a quest-chain (just like key for eye of eternity i guess). Part of the requirements is defeating Iron Council + the 4 watchers (Hodir, Thorim, Auriaya and Freya) in hard mode, and once you got access to it, you can try it for one hour per reset.