Archimonde is dropping items which all have unique effects for each specialization in the game. Here's ours:
Affliction: Reduces the duration and period of Agony, Unstable Affliction, and Corruption by 20%.
Demonology: Hand of Gul'dan has a 40% chance to also summon 3 Wild Imps.
Destruction: Incinerate increases the critical strike chance of your spells against that target by 4% for 10 sec, stacking up to 10 times.
- - - Updated - - -
Hurray for rotating Incinerates around bosses during council fights I guess... :/