Here's a list of the hotfixes that Blizzard has applied this week:

• Pets will no longer trigger the Flame Wreath effect.
• Kael'Thas' phoenix pets should now have the correct immunities.
• Magtheridon's Blast Wave should now function properly.
• 'The Lurker Below' should now spawn correctly after being reset.
• Cyclone no longer causes the targeted player to be considered dead for the arena counter.