When Does Diablo 4 Season 9 Start — Prepare for “Sins of the Horadrim”

The highly anticipated Diablo 4: Season 9 — Sins of the Horadrim officially launches on July 1, 2025. Players worldwide can jump into the new season at 10 AM PDT/ 1 PM ET/ 6 PM BST/ 7 PM CEST. This update promises one of the most significant expansions to Diablo 4’s gameplay since launch, bringing new challenges, systems, and permanent features.

What Awaits in Season 9?

The core of Season 9 revolves around revamped Nightmare Dungeons. These will now become even more rewarding, offering access to key resources, powerful loot, and endgame progression mechanics.

A new feature inside these dungeons is the Horadric Strongrooms — mini-arena encounters that grant players special buffs for clearing enemies quickly. These rooms also let players choose which type of reward they want, whether it’s gold, gear, or crafting materials.

Another major addition is Escalating Nightmares — a challenging sequence of three dungeons, each more difficult than the last. This culminates in a fierce boss battle against an empowered version of Astaroth, offering rare loot and high-end rewards for those who can conquer it.

What’s important is that these dungeon changes are permanent additions to the game, remaining even after Season 9 concludes.

Master the Art of Spellcraft

A completely new mechanic arrives in the form of Horadric Spellcraft. Players can craft Horadric Spells by combining elemental runes and arcane fragments, allowing for deep customization of their abilities. This system encourages building unique playstyles and experimenting with different spell combinations.

A New Seasonal Questline

The seasonal storyline centers around the town of Cerrigar, where players must track down and purify corrupted Blood Relics to stop Astaroth from returning. The druid ally Bryona, a member of the Horadrim, plays a key role in guiding players through this dangerous mission.

Battle Pass, Reliquaries, and Cosmetics

Season 9 introduces Reliquaries, a new reward system within the Battle Pass. These include both free and premium tiers, offering a range of cosmetics like mounts, armor sets, portals, and weapons.

• Free Reliquary: Includes unique cosmetics, including a new mount and portal skin.
• Premium Reliquaries: Cost 1,000 or 2,800 platinum, offering exclusive cosmetic bundles with more elaborate designs.

Additional Features and Improvements

Season 9 doesn’t just stop at dungeons and spells — it brings quality-of-life updates and new gear:

• Horadric Jewels — powerful items that boost damage (e.g., +40% physical damage) or defense. Note: these jewels are not available in Hardcore mode.
• Keyboard and Mouse support for consoles, finally delivering a long-requested feature from the community.
• Several new unique items, fresh seasonal powers, and enhanced cosmetic rewards.
• Adjusted difficulty scaling for dungeons, especially improving rewards at Torment-level difficulties.

Nonetheless, the majority agrees that the updates bring much-needed freshness to the endgame loop.

Final Thoughts

Diablo 4: Season 9 — Sins of the Horadrim kicks off on July 1, 2025, bringing a wealth of content including revamped Nightmare Dungeons, customizable Spellcraft, an engaging seasonal quest, and cosmetic rewards through Reliquaries. Importantly, key features from this season are designed to stay permanently, signaling a significant step forward in Diablo 4’s endgame evolution.