Update release notes for 7.7-preview.2 release

[sdwheeler]

PR Summary

Update release notes for 7.7-preview.2 release

• Fixes AB#582375

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

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

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[Copilot]

Pull request overview

This PR updates PowerShell 7.7 documentation for the 7.7-preview.2 release by adding recent release-note entries and refreshing cmdlet metadata.

Changes:

• Added new cmdlet and engine improvement bullets to the PowerShell 7.7 “What’s New” page.
• Added reference links for newly cited PowerShell PRs.
• Updated the ms.date for Import-PowerShellDataFile.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
reference/docs-conceptual/whats-new/What-s-New-in-PowerShell-77.md	Adds 7.7 release-note entries and PR link references.
reference/7.7/Microsoft.PowerShell.Utility/Import-PowerShellDataFile.md	Updates article metadata date.

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[learn-build-service-prod]

Learn Build status updates of commit 507b87e:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/7.7/Microsoft.PowerShell.Utility/Import-PowerShellDataFile.md	✅Succeeded	View (powershell-7.7)
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 a595284:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/7.7/Microsoft.PowerShell.Utility/Import-PowerShellDataFile.md	✅Succeeded	View (powershell-7.7)
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.