# Sanity Sanity React App SDK v3.0.0: Background revalidation, simplified resource config, and new permission and mutation hooks

- Product: Sanity (https://whatsnew.fyi/product/sanity)
- Vendor: Sanity
- Date: 2026-08-25
- Original notes: https://www.sanity.io/docs/changelog/sdk-react-My4wLjA
- Permalink: https://whatsnew.fyi/product/sanity/releases/2026-08-25-sanity-react-app-sdk-v3.0.0-background-revalidati

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'.

---

App SDK v3 v3 is a major release of the App SDK. The project and organization hooks now revalidate their data in the background, several long-deprecated APIs are removed, and agent, comlink, and dashb…

- **added** — Project and organization hooks now revalidate their data in the background
- **removed** — Several long-deprecated APIs have been removed