Based on the in-game Reliquary countdown, we now have the official start date for Diablo 4’s Season 10: Infernal Chaos. It’s kicking off on September 23, 2025.
This was originally posted on Reddit 6 days ago, where the countdown showed 83 days remaining, just for context…
Season 10 starts on September 23rd. (83 days from today)
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What’s Coming in Season 10?
According to the 2025 Diablo 4 roadmap, Season 10 will be the final season before the next big Diablo 4 expansion drops in 2026. It’s officially titled Season 10: Infernal Chaos, and it’s set to run from September through December 2025.

Here’s what to expect:
- Another round of borrowed powers via Chaos Powers
- The usual reputation grind
- A new pet to earn
- Chances to Infernal Hordes (details to be announced)
- A brand new IP collab, similar to the recent Diablo 4 x Berserk collab