# Sanity v4.0.0 — Sanity UI v4.0.0: Smaller bundles, subpath imports, and a required stylesheet

- Product: Sanity (https://whatsnew.fyi/product/sanity)
- Vendor: Sanity
- Date: 2026-08-10
- Version: v4.0.0
- Original notes: https://www.sanity.io/docs/changelog/ff1da457-dce8-45b7-9431-3fce5265fa8b
- Permalink: https://whatsnew.fyi/product/sanity/releases/v4.0.0

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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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@sanity/ui v4.0.0 is available. The theme of the release is bundle size: heavy components now live behind subpath entry points, unused components tree-shake out, and styles ship as a stylesheet you im…

- **changed** — Heavy components now live behind subpath entry points
- **changed** — Unused components tree-shake out
- **changed** — Styles ship as a stylesheet