[danroth27]

Summary

Refresh aspnetcore notes for the first stable .NET 11 release using normal curated release-note triage, not the earlier .NET 10-style repository-comparison approach.

Part of #10671. This PR changes only its inherited component notes file; the fully linked README and shared metadata remain on the base branch.

Validation and scope

• Managed SHA-256 Data Protection roundtrip passed; comparative allocations were not measured locally.
• MVC rejects an invalid active case of a nested union and accepts the corresponding valid case.
• Minimal API collection validation, IIS startup routing, and custom output-cache behavior rely on source changes and upstream regression tests; not reproduced locally.
• SignalR endpoint-token attribution is resolved by merged .NET 11 backport [release/11.0] [SignalR] Bind connection tokens to their endpoint mapping aspnetcore#69835 (source commit 2dd208b), matching the shipped-change manifest. Supported same-mapping behavior is unchanged; no migration guidance is needed. The notes now link to that backport rather than the original .NET 12 PR.
• Community credits and the output-cache/IIS fix links point to verified .NET 11 backports [release/11.0] Honor custom policies allowing output caching for authenticated users aspnetcore#69724 and [release/11.0] Fix empty PathBase on first IIS in-process request after startup aspnetcore#69837, whose source commits match the shipped-change manifest. Credit remains with the original contributors; the original main-branch PRs target .NET 12.

Validation used the user-supplied installed SDK 11.0.100 (11.0.100-rtm.26529.118), runtime 11.0.0, commit 297acf930fb0f5c07fd4e51d78e521b4ad2e5d1f. Its correlation with public VMR head adff196f4f8b089a31c89914b80e6ea63d69f18c is unverified. Separately restored NuGet packages are identified below where used. All executable checks ran in temporary projects outside the checkout; no sample files are committed. Before publication, refresh against the final public GA tag/build and confirm that linked documentation is finalized for GA.

Normal two-reviewer editorial QA completed. Markdown lint and links pass; repository-wide Checkov and formatter baseline caveats are recorded in #10671.

Owner handoff

Review the draft, promote it to ready-for-review, and merge this PR into release-notes/11.0-ga when ready. The component owner owns the merge, not only approval. Keep the base PR draft until the release ships.

[Youssef1313]

LGTM for Microsoft.Extensions.Validation.

[Copilot]

🔵 Needs a closer look

Publication requires owner verification against the final public GA tag/build because SDK alignment with the source manifest and VMR head remains unverified, and the linked ASP.NET Core 11 breaking-changes page could not be confirmed.

No open issues 🎉

What changed in this PR

Replaces the inherited ASP.NET Core placeholder with .NET 11 GA release notes, focusing on final quality and stability updates. Shared metadata and the release index remain on the base branch.

Changes:

• Adds links to full-release feature documentation and breaking-change guidance.
• Highlights fixes for Data Protection, validation, output caching, IIS hosting, and SignalR.
• Credits community contributors and links their fixes to .NET 11 backports.

File	Description
release-notes/​11.0/​11.0.0/​aspnetcore.md	Adds ASP.NET Core GA fix summaries, migration references, and contributor credits.

_{Review effort: Balanced}