You can get it in cataclysm from the guildvendor(!) after doing some achievement.
So I guess this will be prio 1 on the guildlist! : D

The Cataclysm guild perks are available, they are fucking awesome!
http://www.mmo-champion.com/content/1872-Cataclysm-Guild-Perks-Stonecore-Boss-Videos#new_comment

yes yes, maybe a little late, but better late then never!
Another good progress night for Quantum Chaos, 4 out of 6 active members went out for ICC10 tonight.
After looking for members for about 40 minutes, we got the group together!
The start was normal as always, did the 1st for bosses and went for Dream Walker. It wasn't hard and everything seemed to go easy. 7 Bosses down and no wipe!? With that in our minds we went for Putricide, after a lil discussion about the tacts we 1 shotted the Prof!
With full spirit we went on to the Blood Quarter, after a very good first try on the princes we wiped. Only to come back and pwn them! Same as with the blood queen, we had to wipe first before she went down!
After the queen, our gree night ended. Cicho was tired and another player had to go.

Tactical changes:
Loith went Enhancement for the Festgut/Rotface/Prof. Putricide fight, then after the wiped on princes he went back to Resto. Same goes for the queen, started as DPS but downed the boss as resto.

Shano, shano brought his main to the blood queen fight. This for a higher dps output, both tries on the queen were with Boosa present.


QC Tanks:
None

QC Healers:
Loith - Resto Shaman
CIcho - Disc Priest

QC DPS:
Appleyard (Pindy)- Balance Druid
Shano (Boosa) - Unholy DK

Later the night:
Shano --> Boosa - Changed character

25% Icecrown Citadel buff now active
The Hellscream's Warsong buf in Icecrown Citadel has been increased to 25%

Source: MMO-Champion

Next week patch 3.3.5 will go live, time to kill that Halion guy.
You can check the drops here:
http://ptr.wowhead.com/npc=39863/halion#drops

Video from the ptr: