Unity 6.6 is here — 4 things you should know
Sunny Valley Studio
Sep 1, 2026 15:28
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Chapters
Unity 6.6 brings serialized Dictionaries, the new Hierarchy window on by default, domain reload off by default, and full WebGPU support.
⚠️ Domain reload off means static fields AND static event subscriptions carry over between Play mode sessions. Reset them yourself or you'll chase ghost bugs.
New in Unity 6.6: https://docs.unity3d.com/6000.6/Documentation/Manual/WhatsNewUnity66.html
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