# Next.js v16.4.0-canary.8

- Product: Next.js (https://whatsnew.fyi/product/next-js)
- Vendor: Vercel
- Date: 2026-08-25
- Version: v16.4.0-canary.8
- Original notes: https://github.com/vercel/next.js/releases/tag/v16.4.0-canary.8
- Permalink: https://whatsnew.fyi/product/next-js/releases/v16.4.0-canary.8
- 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 Turbopack resolution through chained symlinks
- **added** — Add evals for whether agents actually use Next.js
- **changed** — Judge behavior instead of matching source text in evals
- **changed** — Bump @vercel/agent-eval to 2.2.1
- **added** — Resolve `/`-rooted imports from the project directory in Turbopack
- **changed** — Use short-lived access tokens for preview-build uploads instead of static token
- **fixed** — Turbopack correctly trace through TypeScript `__importStar`
- **changed** — Simplify Turbopack ecmascript effect queue
- **changed** — Update default Create Next App favicon

###### Misc Changes

- Fix Turbopack resolution through chained symlinks: #97825
- Add evals for whether agents actually use Next.js: #97816
- evals: judge behavior instead of matching source text: #97826
- Bump @vercel/agent-eval to 2.2.1: #97885
- feat(turbopack): resolve `/`-rooted imports from the project directory: #97799
- [ci] Use short-lived access tokens for preview-build uploads instead of static token: #97256
- Turbopack: correctly trace through TypeScript `__importStar`: #97697
- [turbopack] simplify ecmascript effect queue: #97771
- Update default Create Next App favicon: #97634

###### Credits 

Huge thanks to @marcoshernanz, @gaojude, @sokra, @eps1lon, @mischnic, and @aurorascharff for helping!