# Next.js v16.4.0-canary.11

- Product: Next.js (https://whatsnew.fyi/product/next-js)
- Vendor: Vercel
- Date: 2026-08-28
- Version: v16.4.0-canary.11
- Original notes: https://github.com/vercel/next.js/releases/tag/v16.4.0-canary.11
- Permalink: https://whatsnew.fyi/product/next-js/releases/v16.4.0-canary.11
- 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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- **fixed** — Fix optimistic routing for encoded dynamic params
- **fixed** — Fix intercepted route params after Proxy rewrites
- **fixed** — Fix navigation() in prospective runtime prerenders
- **fixed** — Guard filesystem reads against unresolved symlinks
- **changed** — More granular cache keys for use-cache entries
- **changed** — Refactor image optimizer into lightweight transform module
- **changed** — Turbopack: enable export mangling by default in production builds
- **changed** — Turbopack: mangle exported names for smaller bundle sizes
- **changed** — Turbopack: allow get_definable_name to return a list
- **changed** — Turbopack: unify member and in handling
- **changed** — Turbopack: add next_config.use_react_experimental getter

###### Misc Changes

- Fix optimistic routing for encoded dynamic params: #97948
- Fix intercepted route params after Proxy rewrites: #97953
- [PPF] Fix navigation() in prospective runtime prerenders: #98000
- Revert "test: re-enable sync IO root coverage": #98050
- Turbopack: drop rust analyzer skip annotation: #98047
- Turbopack: add next_config.use_react_experimental getter: #98032
- More granular cache keys for use-cache entries: #95233
- [ci] Remove dormant `code_freeze` workflow: #97756
- test: re-enable sync IO root coverage: #97996
- [ci] Remove the unused `wrong-issue-template` workflow and action: #97749
- [image-optimizer] Refactor into lightweight transform module: #97988
- [ci] Remove the stale-issue workflow: #97758
- [ci] Use presigned URLs to upload preview builds: #97922
- Turbopack: allow `get_definable_name` to return a list: #97984
- [ci] Run flake detection and new deploy tests when merged and on backport branches: #97991
- docs(examples): document env var handling in the Docker examples: #97968
- Turbopack: unify `member` and `in` handling: #97985
- Update outdated snapshots: #98011
- Guard filesystem reads against unresolved symlinks: #97902
- Turbopack: enable export mangling by default in production builds: #97676
- Turbopack: mangle exported names for smaller bundle sizes: #97672

###### Credits 

Huge thanks to @marcoshernanz, @lubieowoce, @mischnic, @eps1lon, @gnoff, @styfle, @icyJoseph, and @sokra for helping!