v3.6.0-rc.1

Vue 3.6 is now entering the RC phase as we have completed the intended feature set for Vapor Mode.

3.6 also includes a major refactor of @vue/reactivity based on section later in this release note.

Bug Fixes

• hydration: avoid resolving inherited fallback in forwarded slots ()


• runtime-vapor: avoid patching invalid VNode slot content ()


• runtime-vapor: defer slot content anchors during hydration ()


• runtime-vapor: preserve slot content anchors during mismatch recovery () (


• runtime-vapor: preserve vapor slot owner during interop slot dry run ()


• runtime-vapor: preserve VNode anchors in dynamic component hydration () (


• runtime-vapor: reuse hydration anchor candidates () (

About Vapor Mode

Vapor Mode is a new compilation mode for Vue Single-File Components (SFCs) with the goal of reducing baseline bundle size and improving performance.

It is 100% opt-in and supports a subset of existing Vue APIs with mostly identical behavior. Features that depend on VNodes or the component public instance proxy are not available in Vapor components.

Vapor Mode has demonstrated the same level of performance as Solid and Svelte 5 in for details.

For pre-releases, please refer to CHANGELOG.md of the minor branch.