Updated my PTR client and I've been able to see some new stuff on the Dungeon Journal including the new Baradin Hold boss: Alizabal.
"The Kirin Tor imprissoned Alizabal in their formidable Violet Hold not long after corrupt magi summoned the shivarra into Azheroth. Despite arcane wards restricting her powers, the demon's malicious influence alone caused her guards to murder one another in sudden fits of rage. Her transfer to Baradin Hold prior to the Cataclysm has only aggravated the ruined prison's increasingly dire conditions."
ABILITIES:
Skewer: Alizabal skewers her current target, stunning them. In addition, Skewer inflicts 20,000 damage every second and increases damage taken by 100%.
Seething Hate: Alizabal incites Seething Hate on a random target causing 100,000 damage to all players withing 6 yards, splitting the damage between everyone hit.
Blade Dance: Alizabal enters a Blade Dance inflicting 10,000 physical damage every second to all players withing 15 yards. In addition, during Blade Dance all incoming attacks are reflected.