# Preact 11.0.0-rc.1

- Product: Preact (https://whatsnew.fyi/product/preact)
- Vendor: Preact
- Date: 2026-08-26
- Version: 11.0.0-rc.1
- Original notes: https://github.com/preactjs/preact/releases/tag/11.0.0-rc.1
- Permalink: https://whatsnew.fyi/product/preact/releases/11.0.0-rc.1
- Labels: Pre-release

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Tree-shake feature-specific compat hooks
- **changed** — Simplify toChildArray guards
- **removed** — Remove unused memo factory state
- **removed** — Remove redundant textarea hydration hook
- **changed** — Require prop type stack getter
- **added** — Add missing lowercased html attributes to dom.d.ts

##### Features

- Tree-shake feature-specific compat hooks (#5203, thanks @JoviDeCroock)

##### Bundle size

- Simplify toChildArray guards (#5214, thanks @JoviDeCroock)
- Remove unused memo factory state (#5213, thanks @JoviDeCroock)
- Remove redundant textarea hydration hook (#5212, thanks @JoviDeCroock)
- Require prop type stack getter (#5210, thanks @JoviDeCroock)

##### Types

- Add missing lowercased html attributes to dom.d.ts (#5207, thanks @teddybradford)

##### Maintenance

- Clarify staged npm release approval flow (#5204, thanks @JoviDeCroock)
- Declare the sass dependency vite's scss compilation needs (#5206, thanks @upupming)
- Cover JSX refs and event bubbling (#5211, thanks @JoviDeCroock)
- Fix parameter description in getHookState function (#5209, thanks @exedealer)