We got the first schedule from Daelo:
On the North American test realms:
Hodir - Thursday night, February 26, starting at 7pm EST/4pm PST.
Iron Council - Friday night, February 27, starting at 7pm EST/4pm PST
On the European test realms
Thorim - Friday night, February 27, starting at 7pm CET.
Freya - Friday night, February 28, starting at 7pm CET.
Though the instance is still empty (no trash, no loot and no achievement yet), bosses will be tested at scheduled times.
You can find some nice pictures of the inside of Ulduar on Wow Insider, gallery there: Ulduar Article & Gallery.
Several news sites gave us insight on Hodir this morning in Europe:
World of Raids
The information is still a bit inconsistent but it gives a good idea of what to expect with Hodir.
The guild Alpha of Ysera is giving more insight on Hodir on their website. They got him to 43% while discovering the encounter, good job.
Some interesting facts about Hodir.
He switches between:
- a normal state, hitting your tank (in Mc Weaksauce gear, understand Ulduar10 equivalent) for 25K physical damage;
- and a frost state, that he enters for 20s after a Flash Freeze, he then gains a buff (Frozen Blows) that reduce his physical damage by 70% and add a lot of frost damage to his hits (40K on heroic).
To finish he has a Flash Freeze ability (long casting) that hits all the raid and encage them into ice if they're not protected.
Several npcs will be encaged in ice at the beginning of the fight (4 in normal, 8 in heroic). You can shatter the ice to free them and get them to help. They will light fires in the room that can protect you from several frost abilities of Hodir (most notably his Flash Freeze).
All of this promise a very interesting fight. With a 14mn enrage timer and a 35K hps boss, it could be a sign of the return of the long boss fights that I like so much :D