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Next.js 16.3 is now available!
• Up to 90% less memory in dev
• Faster builds, type checking, and rendering
• Better tooling for AI agents
• Custom error boundaries
• Instant Navigations for SPA-like responsiveness
nextjs.org/blog/next-16-3
Here's what's new ↓
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The Next.js September security release is planned for September 30, 2026.
It will address nine vulnerabilities, including one critical and two high-severity issues, with fixes in 16.3.7 and 15.5.27. Upgrade once they are available.
nextjs.org/blog/upcoming-nex…
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To stay up to date on future Next.js security releases, subscribe to our RSS feed:
nextjs.org/feed/security.xml
Or browse all security posts:
nextjs.org/blog/tag/security
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GPT-6 Sol debuts at 97% on Next.js evals, tying the highest success rate.
Claude Opus 5.5 also reached 97%, joining Claude Fable 5.1. Opus ranks first among the three on average cost.
View the leaderboard ↓
nextjs.org/evals
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The September 22 out-of-band Next.js security update is now available.
It addresses a critical upstream issue affecting Next.js 16. Next.js 15 is not affected, but 15.5.26 adds hardening.
▲ ~/ npm install next@16.3.6
▲ ~/ npm install next@15.5.26
nextjs.org/blog/nextjs-secur…
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To stay up to date on future Next.js security releases, subscribe to our RSS feed:
nextjs.org/feed/security.xml
Or browse all security posts:
nextjs.org/blog/tag/security
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Grok 4.7 is the first @grok model to reach the top three on Next.js evals.
View the leaderboard ↓
nextjs.org/evals
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An out-of-band Next.js security update is planned for September 22, 2026.
It addresses a critical issue in an upstream dependency. Upgrade to Next.js 16.3.6 or 15.5.26 as soon as they are available.
nextjs.org/blog/upcoming-nex…
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To stay up to date on future Next.js security releases, subscribe to our RSS feed:
nextjs.org/feed/security.xml
Or browse all security posts:
nextjs.org/blog/tag/security
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We closed 1,500 issues on 𝚟𝚎𝚛𝚌𝚎𝚕/𝚗𝚎𝚡𝚝.𝚓𝚜 in one month by building a 𝚌𝚕𝚘𝚜𝚊𝚋𝚒𝚕𝚒𝚝𝚢 agent with @eve.
The workflow:
1. Search related work
2. Try to reproduce bugs across versions in a sandbox
3. Return context for review
nextjs.org/blog/how-we-close…
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Your Next.js app ships dozens of JavaScript chunks. Turbopack has to balance how many requests a page makes against how much code it ships.
Learn how it works and what's new in Next.js 16.3.
nextjs.org/blog/turbopack-ch…
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The August Next.js security release is now available one day ahead of schedule to include a fix for a newly disclosed vulnerability in an upstream dependency.
▲ ~/ npm install next@16.3.3
▲ ~/ npm install next@15.5.24
nextjs.org/blog/august-2026-…
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To stay up to date on future Next.js security releases, subscribe to our RSS feed:
nextjs.org/feed/security.xml
Or browse all security posts:
nextjs.org/blog/tag/security
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We’ve moved the scheduled August Next.js security release forward to today, August 25, to include a fix for an additional critical severity vulnerability.
nextjs.org/blog/nextjs-secur…
Next.js 16.3.3 and 15.5.24 will include fixes for both vulnerabilities. Upgrade once they are available.
In July, we began announcing Next.js security releases ahead of time. The next security release is planned for August 26, 2026.
It will address one critical severity vulnerability with fixes in 16.3.2 and 15.5.24, so upgrade once they are available.
nextjs.org/blog/upcoming-nex…
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To stay up to date on future Next.js security releases, subscribe to our RSS feed:
nextjs.org/feed/security.xml
Or browse all security posts:
nextjs.org/blog/tag/security
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In July, we began announcing Next.js security releases ahead of time. The next security release is planned for August 26, 2026.
It will address one critical severity vulnerability with fixes in 16.3.2 and 15.5.24, so upgrade once they are available.
nextjs.org/blog/upcoming-nex…
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To stay up to date on future Next.js security releases, subscribe to our RSS feed:
nextjs.org/feed/security.xml
Or browse all security posts:
nextjs.org/blog/tag/security
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Next.js retweeted
We're the Next.js team. Ask us anything!
We recently shipped Next.js 16.3, and we’re excited to talk about what’s new, how we approached the release, where we are going, and what we’ve learned while building and maintaining Next.
Ask us anything about Next 16.3, App Router, React Server Components, performance, caching, upgrading your applications, contributing to the framework, or what it’s like to work on Next.js.
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Instant Navigations in Next.js 16.3 lets you achieve snappy, app-like UX without giving up the benefits of Server Components.
See how Cache Components and Partial Prefetching come together in a music player, social feed, calendar, and team chat.
nextjs.org/blog/building-app…
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Navigations in v0 got ~3.5× faster with Next.js 16.3.
An agent ran this loop on each slow nav:
1. Write a failing 𝚒𝚗𝚜𝚝𝚊𝚗𝚝() test
2. Apply a fix from the Skill
3. Re-run the test
4. Repeat 2–3 until it passes
nextjs.org/blog/making-v0-na…
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You can run the loop on your own app.
Grab the Skill and prompt your agent with something like:
"Make the navigation from /dashboard to /projects instant using the next-cache-components-optimizer Skill."
skills.sh/vercel/next.js/nex…
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