Update release note for 7.7.0-preview.3 release

[sdwheeler]

PR Summary

Update release note for 7.7.0-preview.3 release

• Fixes AB#597062

PR Checklist

• Descriptive Title: This PR's title is a synopsis of the changes it proposes.
• Summary: This PR's summary describes the scope and intent of the change.
• Contributor's Guide: I have read the contributor's guide.
• Style: This PR adheres to the style guide.

[learn-build-service-prod]

PoliCheck Scan Report

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[Copilot]

Pull request overview

Updates PowerShell 7.7 documentation to reflect the 7.7.0-preview.3 release, including the updated runtime baseline and new release-note entries, plus a Windows install guide refresh for the current preview MSIX link.

Changes:

• Bumps the PowerShell 7.7 “What’s New” page to preview.3, including the .NET runtime version and new bullet items.
• Adds/updates reference links for newly mentioned PRs in the 7.7 release notes.
• Updates the Windows install documentation to point to the 7.7.0-preview.3 MSIX bundle.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
reference/docs-conceptual/whats-new/What-s-New-in-PowerShell-77.md	Updates 7.7 preview release notes, adds new entries and reference links.
reference/docs-conceptual/install/install-powershell-on-windows.md	Updates “Current preview” MSIX bundle version and download URL to preview.3.

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[learn-build-service-prod]

Learn Build status updates of commit e19c472:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/install/install-powershell-on-windows.md	✅Succeeded	View (>=powershell-5.1)
reference/docs-conceptual/whats-new/What-s-New-in-PowerShell-77.md	✅Succeeded	View (>=powershell-5.1)

For more details, please refer to the build report.

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

More information about PoliCheck

Information: PoliCheck | Severity Guidance | Term
For any questions: Try searching the learn.microsoft.com contributor guides or post your question in the Learn support channel.

[learn-build-service-prod]

Learn Build status updates of commit 9112299:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/install/install-powershell-on-windows.md	✅Succeeded	View (>=powershell-5.1)
reference/docs-conceptual/whats-new/What-s-New-in-PowerShell-77.md	✅Succeeded	View (>=powershell-5.1)

For more details, please refer to the build report.

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

More information about PoliCheck

Information: PoliCheck | Severity Guidance | Term
For any questions: Try searching the learn.microsoft.com contributor guides or post your question in the Learn support channel.

[learn-build-service-prod]

Learn Build status updates of commit 898f25e:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/install/install-powershell-on-windows.md	✅Succeeded	View (>=powershell-5.1)
reference/docs-conceptual/whats-new/What-s-New-in-PowerShell-77.md	✅Succeeded	View (>=powershell-5.1)

For more details, please refer to the build report.