# Next.js v16.4.0-canary.6

- Product: Next.js (https://whatsnew.fyi/product/next-js)
- Vendor: Vercel
- Date: 2026-08-24
- Version: v16.4.0-canary.6
- Original notes: https://github.com/vercel/next.js/releases/tag/v16.4.0-canary.6
- Permalink: https://whatsnew.fyi/product/next-js/releases/v16.4.0-canary.6
- 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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- **changed** — turbo-tasks now executes scheduled tasks inline when they are read
- **fixed** — Revert record fallback cache lifetime for blocking PPR routes
- **changed** — Sweep stale Turbopack output from distDir on dev startup
- **fixed** — Fix metadata prefetch cache key for search params
- **changed** — Turbopack improves file existence error handling in realpath_with_links and in module resolution
- **changed** — Write traces with buffered synchronous IO

###### Misc Changes

- turbo-tasks: execute scheduled tasks inline when they are read: #96808
- Revert "Record fallback cache lifetime for blocking PPR routes (#97821)": #97835
- Sweep stale Turbopack output from distDir on dev startup: #97591
- Fix metadata prefetch cache key for search params: #97729
- Turbopack: Improve file existence error handling in realpath_with_links and in module resolution: #97717
- Write traces with buffered synchronous IO: #96874

###### Credits 

Huge thanks to @sokra, @acdlite, @wbinnssmith, @marcoshernanz, @bgw, and @lukesandberg for helping!