Blizzard has posted upcoming dungeon fixes for Mythic+ which includes nerfing the last boss of Ara-Kara!
We’re currently working on some updates to Dungeon encounters that we’ll implement before Mythic+ gets underway.
Mists of Tirna Scithe - Mistcaller
Addressed an issue where Dodgeball was inflicting damage to unintended targets.
Ara-kara, City of Echoes - Ki’katal the Harvester
Erupting Webs
Stun duration reduced to 3 seconds (was 6 seconds). - Damage reduced by 18%.
- Grasping Blood is now susceptible to interrupt effects.
Siege of Boralus - Players can now use both Alliance and Horde portal to enter the dungeon.
- Leaving Siege of Boralus now puts players at the correct exit location based on their factions.
- Jaina Proudmoore now teleports players to the correct exit location based on their factions.
- Chopper Redhook
Added various visual improvements for the encounter.
Dawnbreaker - There is now a Worn Anvil to repair next to Arathi Lamplighter on the Dawnbreaker.
.
Read more on wowhead.com