The new path of exile 2 0.4 expansion coming the 11 December reveals major changes to existing content plus a new class with two ascendancies.

Highlights from the patch notes:

General Changes

• Tailwind tuned: 1% movement, 2% skill speed, 10% evasion, deflected hit mitigation per stack
• Unarmed base attack speed increased to 1.65 APS
• Rage QoL: regen pauses decay; all rage skills cost 10; visual only at 10+ rage
• Armour cannot reduce hits to 0 damage (minimum 1)
• Ignite auras now apply standard ignites with reapplication (no infinite stacking)

Ascendancy Highlights

Deadeye

• Wind Ward removed
• Bullseye requires Called Shots; now applies 10 Critical Weakness
• New Mirage Deadeye meta skill: creates a mirage that uses socketed ranged attacks

Pathfinder

• Contagious Contamination and Practical Remedies removed
• Running Assault: cannot be Heavy Stunned while Sprinting
• New Path Seeker multi-choice: Path of the Warrior or Sorceress (+4 passive points)
• Traveller's Wisdom requires Path Seeker; attribute passives gain extra options (damage, global defences, cost efficiency)

Amazon

• Elemental Surge rework: consuming a charge triggers Elemental Surge with Lightning Surges
• Surging Avatar rework: consuming a charge triggers Elemental Surge granting Cold, Lightning, and Fire Surges

Ritualist

• Ritual Sacrifice stolen mod duration massively increased (up to 120s; quality +20s)
• Corrupted Lifeforce: 15% more damage to enemies affected by Blood Boil

Warbringer

• Imploding Impacts: fully broken armour increases all hit damage taken
• Ancestral Warhorn minion hits close enemies more consistently

Titan

• Surprising Strength removed
• Crushing Impacts: 25% more damage vs Heavy Stunned
• New Mountain Splitter: every third non-fissure slam adds additional aftershocks; requires Crushing Impacts

Smith of Kitava

• Connected notables to Smith's Masterwork now grant +200 Armour
• Padded Plates, Lead Lining, Heavy Bracing removed; replaced with:
  • Kitavan Imprint: body armour grants 60% increased Glory generation
  • Spiked Plates: body armour grants 100% increased Thorns damage
  • Tribute to Utula: body armour grants 30% increased Spirit
• Internal Layer: 100% reduced critical damage taken
• Heatproofing: unaffected by all damaging ailments
• Heat of the Forge: triggered fire spells cost no mana; +10% damage per level (up to 200% at 20)
• Temper Weapon: no mana cost; Combust on empowered attacks +25% more damage; 3m radius
• Manifest Weapon AI improvements; cooldown reductions for mace and quarterstaff; spear dash damage fixed

Infernalist

• Seething Body rework: gain Elemental Archon on spell cast while on High Infernal Flame; Archon persists until maximum Infernal Flame

Blood Mage

• Whispers of the Flesh: cursed targets have 100% reduced life regen

Stormweaver

• Refracted Infusion: always gain an additional different infusion
• Storm's Recollection: collect remnants from 50% further away
• Multiplying Squalls: +2 to limit of elemental skills

Chronomancer

• Inevitability's Inevitable Agony: ignores curse limit; expired curse deals 50% of hit damage again

Gemling Legionnaire

• Thaumaturgical Infusion: max res per 3 same-color support gems (buffed from 4)
• Thaumaturgical Dynamism: charge every 5s (from 8s)

Tactician

• Supporting Fire (Death From Above) overhaul: 20s cooldown, 0.75s volley cadence, 6 volleys, 14m width; adjusted damage
• Strategic Embankments updates:
  • Artillery Ballista: +20% skill speed
  • Siege Ballista: 25% more damage vs immobilised
  • Mortar Cannon: 25% of damage gained as extra fire
  • Spell Totem added to auras; +50% crit chance

Witchhunter

• Witchbane: enemy max concentration now 30% life (buff)
• Ceremonial Ablution: Sorcery Ward protects vs physical and chaos

Invoker

• "…and Protect me from harm": 35% less evasion (reduced penalty)
• The Soul Springs Eternal: meta skills 50% increased spirit reservation efficiency
• Unbound Avatar: 12s cooldown; ailments grant Unbound Fury; Shock/Ignite now grant 1 (from 2)

Acolyte of Chayula

• Embrace the Darkness: +10 max Darkness per level
• Waking Dream – Into the Breach:
  • Red Flames: 15% life leech
  • Blue Flames: 15% mana leech
  • Purple Flames: 8s duration; flames spawn closer to player
• Choice of Power/Life/Mana: +50% remnant effect and pickup range
• Grasp of the Void – Void Illusion:
  • 4s cooldown at all levels; 3 charges
  • Damage significantly increased (350–1268% attack damage)

See the full patch notes from grinding gear games pathofexile.com