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Add .NET 11 Preview 3 release notes draft#10344

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richlander wants to merge 3 commits intomainfrom
release-notes/11.0-preview3
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Add .NET 11 Preview 3 release notes draft#10344
richlander wants to merge 3 commits intomainfrom
release-notes/11.0-preview3

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Summary

  • add the initial .NET 11 Preview 3 release notes draft
  • include freshly regenerated changes.json and build-metadata.json
  • use a clean rerun branch for review without the prior PR history

This PR is the fresh manual rerun while the agentic workflow authentication issue is still being debugged.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
- [Unsafe Evolution remains a preview feature in .NET 11](#unsafe-evolution-remains-a-preview-feature-in-net-11)
- [Breaking changes](#breaking-changes)

## Unsafe Evolution remains a preview feature in .NET 11
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This title states the obvious. We could re-use it every time and it would still be true.

How about "Unsafe Evolution project adds clearer warnings and errors"?

Also, is the new() constraint specific to Unsafe Evolution?

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Good catch. I agree the heading is too generic as written. I'll tighten it to focus on the actual Preview 3 additions, likely along the lines of your suggestion, and I'll re-check whether the new() constraint item is specific enough to keep under the Unsafe Evolution framing.

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Acted on. I updated the heading to focus on the actual Preview 3 additions, and yes — the new() constraint item is coming from dotnet/roslyn #82647, which is explicitly part of the Unsafe Evolution work.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
@richlander richlander marked this pull request as ready for review April 7, 2026 22:43
Co-authored-by: Daniel Roth <daroth@microsoft.com>
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2 participants