Here are all the Barbarian changes that will land for the class in the upcoming Season 9! Keep in mind these are based off of Patch 2.3.0 PTR notes and we may see an additional wave of class tuning post-testing.
PTR testing begins May 27 and is PC/Battle.net only.
Barbarian Skill Changes
Frenzy – Damage increased from 30% to 70%.
Lunging Strike – Damage increased from 33% to 90%.- Battle Lunging Strike – Bleed damage increased from 20% to 40%.
Bash – Damage increased from 33% to 90%.
Flay – Damage Over Time increased from 48% to 115%.
Hammer of the Ancients – Damage increased from 98% to 110%.
Leap – Previously: Leap forward and slam down, dealing damage to and knocking back surrounding enemies.
Now: Leap forward and slam down, dealing damage and slowing surrounding enemies by 70%.- Mighty Leap – Previously: Enemies Damaged by Leap are slowed by 70%.
Now: Leap deals 40%[x] increased damage. Enemies damaged by Leap are knocked back. 
Whirlwind – Movement Speed penalty while Whirlwinding is now additive instead of multiplicative.
Barbarian Passive Changes
Outburst – Barbarian’s Outburst passive now grants at least 1 Thorns per bonus Maximum Health threshold regardless of player level.
Developer’s Note: It’s intended that the bonus Maximum Health threshold dynamically updates as the player levels, and that remains unchanged.
Barbarian Unique Item Changes
Ugly Bastard Helm – Now Requires Wrath of the Berserker, instead of only Berserking, to be active to convert your damage to Fire.
Twin Strikes – Updated the tooltip to make it more obvious that the Double Swing is doing 2 additional applications of damage per hit, per power instance, over the course of that 3 second window.
New Barbarian Unique Item
- Hooves of the Mountain God: Unique Boots
- Affixes
- Inherent: Attacks Reduce Evades Cooldown by 2.5 Seconds
- +17.5-23% Movement Speed
- +16-25% Basic Attack Speed
- +7-10 Fury Per Second
- +2-3 Ranks to Belligerence
- Power
- When reaching Maximum Fury, your Fury will rapidly drain until you run out and all your Basic skills now cleave and deal 70-100%[x] increased damage.
- Affixes
Barbarian Tempering Changes
- Furious Augments – Chance for Bash to Cleave changed to Chance for Bash to Hit Twice.
Barbarian Paragon Changes
- Hemorrhage – Previously: Your Bleeding damage is increased by 15%[x] of your Vulnerable Damage Bonus, up to a maximum of 45[%].
Now: Applying a Bleed to a Vulnerable target deals 45%[x] increased damage. - Blood Rage – Previously: Killing a Bleeding enemy has 10% chance to grant Berserking for 5 seconds. Your damage is increased by 10%[x] of your Damage while Berserking bonus, up to a maximum of 45%[x].
Now: Killing a Bleeding enemy has 10% chance to grant Berserking for 5 seconds. You gain 45%[x] increased damage while Berserking. - Carnage – Previously: While Berserking, Critical Strikes increase your Attack Speed by 2%[+], up to 16%[+], for 6 seconds.
Now: Berserking now additionally grants 15%[+] Attack Speed. - Decimator – Previously: Each time you make an enemy Vulnerable, your damage is increased by 20%[x] for 5 seconds. Overpowering a Vulnerable enemy grants an additional 20%[x] bonus for 5 seconds.
Now: You deal 20%[x] increased damage to Vulnerable enemies. Your Overpower deals 20%[x] increased damage. - Flawless Technique – Previously: Damaging enemies with One-Handed Weapons increases your Critical Strike chance by 1% for 4 seconds, up to 8%. This can only happen once per Skill cast, or twice per second while channeling Whirlwind.
Now: Consecutive attacking with the same weapon increases your Critical Strike chance by 15%[+] for 4 seconds. - Force of Nature – Previously: Your Earthquakes have a 75% chance to spawn a Dust Devil every second that deals 180% Weapon damage. Earthquake damage is increased by 40% of your Damage vs Close bonus, up to a maximum of 200%.
Now: Your Earthquake deals 45%[x] increased damage and have a 75% chance to spawn a Dust Devil every second that deals 180% Weapon damage.
Barbarian Bug Fixes
- Fixed an issue where Fighter’s Mighty Throw extra pulses would deal twice as much damage as intended.
- Fixed an issue where Fighter’s Mighty Throw would grant its Barrier without putting points into the upgrade.
- Fixed an issue where Barbarian Fighter’s Mighty Throw would snapshot bonuses when swapping weapons.
- Fixed an issue where the Earthquake damage buff from Executioner’s Aspect remained after removing the item.
- Fixed an issue where the Ugly Bastard Helm would occasionally not increase some sources of Fire damage.
