Docs: RC Updates

[delbaoliveira]

Do not merge.

• staticgeneration* options
• next/form now available in pages, prefetch prop added to app
• next/after stable reverted changes
• instrumentation.js stable
• More secure server actions
• Update turbopack docs
  • https://nextjs.org/docs/architecture/turbopack
  • https://nextjs.org/docs/app/api-reference/next-config-js/turbo
  • Move turbo config option out of experimental
• Document connection()
  • De-prioritize unstable_noStore - add note about using connection()
  • Replace examples of noStore with connection
• Async APIs
  • Reference Pages
    • cookies
    • headers
    • draftMode
    • page.js (searchParams and params prop)
    • layout.js (params prop)
    • route.js (params prop)
    • default.js (params prop)
    • Clarify use usage https://vercel.slack.com/archives/C06N3AXRQ82/p1726483924090979?thread_ts=1726250070.321229&cid=C06N3AXRQ82
  • Update examples throughout the docs:
    • cookies
    • headers
    • draftMode
    • searchParams
    • params
• Update Dynamic API section in the Server Components Page: https://nextjs.org/docs/app/building-your-application/rendering/server-components#dynamic-rendering
• Update Dynamic API mentions in Route Handler page: https://nextjs.org/docs/app/building-your-application/routing/route-handlers#dynamic-functions
• Update upgrade guide for Next 15 RC: https://nextjs.org/docs/app/building-your-application/upgrading/version-15
  • Document codemods for async APIs. PR: Codemod for Async Request API #69572
  • Document geo codemod. Done here: feat(next): codemod for removed geo and ip of NextRequest #70064

Closes: https://linear.app/vercel/issue/DOC-3018/nextjs-15-rc-2

[github-actions]

All broken links are now fixed, thank you!

[molebox]

Looking good. Left some comments

[tresorama]

Please include in this page that :
If user-land uses draft mode with an Headless CMS (Directus...) that sends the request to draft mode with an <iframe>, the default cookie set by draftMode().enable() has SameSite=lax and this means that the iframe cannot use that cookie, resulting in draftmode considered disabled by Next.

The solution is that user-land rewrites the cookie, overwriting SameSite=lax with SameSite=none; Secure=true.

Like in #49927

---

What I said is true for Next 14.2.15 and Directus, don't know if it's still true with Next 15.
I suggest to include this:

• because the common usage for draft mode is in combination with an Headless CMS, and they use an iframe 90% of the time.
• I expect the docs (that are great) to tell me about that
• i saw you updated this page yesterday so maybe it's the ideal moment

Thanks 😎