It also highlights the story quests required to unlock the new Mercenaries, the return of the Lacuni, and the Kurast Undercity.
Blizzard Entertainment's action RPG expansion launches for Xbox and PlayStation consoles and PC on October 8.
Blizzard Entertainment promises "diabolical surprises" for the expansion's showing at Gamescom Opening Night Live.
First-party titles like Indiana Jones and the Great Circle and Starfield: Shattered Space will also receive theater presentations.
The livestream will outline feedback from the previous PTR while showcasing the new seasonal activity and balance changes.
The new activity, Infernal Hordes, sees players battling against waves of enemies, culminating in a battle with the Fell Council.
Narrative designer Eleni Rivera-Colon also reveals that players will explore the Spirit Realm alongside Nahantu in the upcoming expansion.
Harnessing the power of the Spirit Guardians, the new Spiritborn class can unleash all kinds of elemental attacks on enemies.
Members of the action RPG's development team will talk about the upcoming class' design, gameplay, lore, and more.
Quality of life changes also include an altar to respawn a boss to fight them again, not having to craft sigils for The Beast in Ice, and more.
Season 5 introduces the Infernal Hordes - a wave-based activity ending in a boss fight against the Fell Council for rewards.
The expansion, which is in development for PC and consoles, will bring a new location, new loot, new story content, and more.
Players can now Temper their gear with affixes of their choice, upgrade them for more benefits and partake in revamped Helltides.
After its PTR session in April, Blizzard has made several changes to Masterworking, Tempering, Helltides and much more for Season 4.
The development team will discuss what it learned from last month's Public Test Realm, provide a deep dive into Season 4 and more.
New mechanics like Tempering and Masterworking, an overhaul to loot drops and affixes, and fresh activities arrive this month for free.
Blizzard will reveal more details for World of Warcraft: The War Within and Diablo 4: Vessel of Hatred "over the next few months."
Diablo 4's player base on Xbox saw a healthy boost following its Game Pass launch, as per Xbox president Sarah Bond.
Each class has new Uniques and Legendary Aspects to grind for when the Public Test Realm goes live on April 2nd on BattleNet.
The Echo of Andariel also joins the Season 4 PTR ladder, offering another source to farm Uber Unique rates other than Duriel.
