Match NuGet order of RelNotes; detailed h2 headings

[mikehoffms]

Rendered article sections for review:

• Release notes for the WebView2 SDK

  • /webview2/release-notes/index.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/?branch=pr-en-us-3757
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/mikehoffms/prerelease-before-release/microsoft-edge/webview2/release-notes/index.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/release-notes/
  • Made order of h2 sections match NuGet.
  • Made h2 headings use pattern:
    • Prerelease SDK 1.0.3908-prerelease, for Runtime 147 (Mar. 16, 2026)
    • Release SDK 1.0.3856.49, for Runtime 146 (Mar. 16, 2026)
    • For consistency.
    • To facilitate maintenance & content development as APIs flow through Phase 1/2/3.

• Archived release notes for the WebView2 SDK

  • /webview2/release-notes/archive.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/archive?branch=pr-en-us-3757
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/mikehoffms/prerelease-before-release/microsoft-edge/webview2/release-notes/archive.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/release-notes/archive
  • Made order of h2 sections match NuGet.
    • Added 5 missing sections, as starter sections. Find "missing" in headings.
  • Made h2 headings use pattern:
    • Prerelease SDK 1.0.3908-prerelease, for Runtime 147 (Mar. 16, 2026)
    • Release SDK 1.0.3856.49, for Runtime 146 (Mar. 16, 2026)
    • For consistency.
    • To facilitate maintenance & content development as APIs flow through Phase 1/2/3.

---

Incidental files

• TOC

  • toc.yml
  • Moved "About release notes for the WebView2 SDK" from top to bottom of the "Release notes" TOC bucket.
    • The About article was overly prominent. It's in the way, and unnecessarily forces you to have to consciously think about which of the 3 articles contain the promised relnotes, every time you navigate.

• /webview2/release-notes/includes/templates.md

  • Removed specific months; made generic.
  • Made h2 headings use pattern:
    • Prerelease SDK 1.0.3908-prerelease, for Runtime 147 (Mar. 16, 2026)
    • Release SDK 1.0.3856.49, for Runtime 146 (Mar. 16, 2026)
    • For consistency.
    • To facilitate maintenance & content development as APIs flow through Phase 1/2/3.
  • Put Prerelease section above Release section.
    • Like at NuGet. For sequential ordering, instead of back-and-forth alternating/jumping.

• Microsoft Edge 133 web platform release notes (Feb. 2025) through
  Microsoft Edge 147 web platform release notes (Apr. 2026)

  • /web-platform/release-notes/133.md through
    /web-platform/release-notes/147.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/web-platform/release-notes/133?branch=pr-en-us-3757
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/mikehoffms/prerelease-before-release/microsoft-edge/web-platform/release-notes/133.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/web-platform/release-notes/133
  • Updated link text: See [Release SDK 1.0.3065.39, for Runtime 133 (Feb. 10, 2025)] in Archived release notes for the WebView2 SDK.

---

About this PR

• Moves the RelNotes h2 sections into a different sequence, that matches NuGet.
  • Doesn't change the content of wv2 RelNotes entries.
• Adds the details to all of the h2 headings, that are needed in order to maximally facilitate maintenance and Content Development.
  • Required for the maintainers' context, which includes VS Code > the Primary Side Bar > the Explorer view > the Outline view.
  • The headings need to be clear, not obscure. Maintainers needs to see, explicitly and immediately:
    • Whether a Release or Prerelease. (Not consistently shown in NuGet's list after you click Load more; doesn't say "Release".)
    • The version number. (Shown in NuGet's list.)
    • The Runtime version. (Not shown in NuGet's list.)
    • The release date. (Shown in NuGet's list.)
  • Facilitating maintenance and Content Development is a top priority for the complicated RelNotes process.
• Adds 5 missing h2 sections.
• Adds a standard comment at end of each h2 section, to facilitate maintenance & Content Development.
• Moves "About release notes for the WebView2 SDK" from top to bottom of the "Release notes" TOC bucket.
  • It's in the way, and unnecessarily forces conscious thinking about which of the 3 articles contain the promised relnotes, every time you nav.

---

To do when merge this PR

• Update relnotes links in WebView2Announcements Issues.
  • Including 1-2 years ago, where users are taken to index.md (no auto-scroll to anchor; end up at top of page) but have to nav to archive.md instead, eg. SDK Release: 1.0.3079-prerelease.
  • While that's not done after merging this PR, the resulting UX will be:
    • Past year: No auto-scroll to anchor; end up at top of page; must select the heading in "In this article" nav.
    • Over 1 year ago: Users are taken to index.md, but have to nav to archive.md instead, and then select the heading in "In this article" nav.

---

Demonstration that section content is unchanged

Prerelease SDK 1.0.3415-prerelease, for Runtime 140 (Jul. 14, 2025)

• https://learn.microsoft.com/microsoft-edge/webview2/release-notes/#103415-prerelease
• https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/?branch=pr-en-us-3757#prerelease-sdk-103415-prerelease-for-runtime-140-jul-14-2025

Prerelease SDK 1.0.3171-prerelease, for Runtime 135 (Mar. 10, 2025)

• https://learn.microsoft.com/microsoft-edge/webview2/release-notes/archive#103171-prerelease
• https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/archive?branch=pr-en-us-3757#prerelease-sdk-103171-prerelease-for-runtime-135-mar-10-2025

Release SDK 1.0.1245.22, for Runtime 102 (Jun. 14, 2022)

• https://learn.microsoft.com/microsoft-edge/webview2/release-notes/archive#10124522
• https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/archive?branch=pr-en-us-3757#release-sdk-10124522-for-runtime-102-jun-14-2022

AB#61473319

[mikehoffms]

LGTM - Writer/Editor

[captainbrosset]

Let's make sure to update the webview2announcements links as soon as possible after merging.

[learn-build-service-prod]

Learn Build status updates of commit 27c6cac:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/toc.yml	✅Succeeded	View
microsoft-edge/web-platform/release-notes/133.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/134.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/135.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/136.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/137.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/138.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/139.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/140.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/141.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/142.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/143.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/144.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/145.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/146.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/147.md	✅Succeeded	View
microsoft-edge/webview2/concepts/versioning.md	✅Succeeded	View
microsoft-edge/webview2/release-notes/archive.md	✅Succeeded	View
microsoft-edge/webview2/release-notes/includes/templates.md	✅Succeeded
microsoft-edge/webview2/release-notes/index.md	✅Succeeded	View

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