Release Az 15.5.0

[azure-powershell-bot]

Description

Merge release-2026-04-07 to main. Merge it after final rc is done!

Checklist

• Check this box to confirm: I have read the Submitting Changes section of CONTRIBUTING.md and reviewed the following information:

• SHOULD select appropriate branch. Cmdlets from Autorest.PowerShell should go to generation branch.
• SHOULD make the title of PR clear and informative, and in the present imperative tense.
• SHOULD update ChangeLog.md file(s) appropriately
  • For any service, the ChangeLog.md file can be found at src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md
  • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header in the past tense. Add changelog in description section if PR goes into generation branch.
  • Should not change ChangeLog.md if no new release is required, such as fixing test case only.
• SHOULD have approved design review for the changes in this repository (Microsoft internal only) with following situations
  • Create new module from scratch
  • Create new resource types which are not easy to conform to Azure PowerShell Design Guidelines
  • Create new resource type which name doesn't use module name as prefix
  • Have design question before implementation
• SHOULD regenerate markdown help files if there is cmdlet API change. Instruction
• SHOULD have proper test coverage for changes in pull request.
• SHOULD NOT introduce breaking changes in Az minor release except preview version.
• SHOULD NOT adjust version of module manually in pull request

[azure-client-tools-bot-prd]

Thanks for your contribution! The pull request validation has started. Please revisit this comment for updated status.

[Copilot]

Pull request overview

This PR merges release content toward the Az 15.5.0 release, including DnsResolver module preannouncements for upcoming breaking changes tied to a future API migration.

Changes:

• Added DnsResolver release notes describing planned breaking changes for a future API version migration.
• Added AutoRest README directives intended to emit breaking-change annotations for affected cmdlets.
• Updated generated DnsResolver cmdlet metadata to include a breaking-change attribute for New-AzDnsResolverDomainList.

Reviewed changes

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

File	Description
src/DnsResolver/DnsResolver/ChangeLog.md	Adds upcoming-release notes preannouncing breaking changes and a planned new bulk upload cmdlet.
src/DnsResolver/DnsResolver.Autorest/README.md	Adds AutoRest directives for preview/breaking-change messaging for specific cmdlets.
generated/DnsResolver/DnsResolver.Autorest/generated/cmdlets/NewAzDnsResolverDomainList_CreateExpanded.cs	Adds CmdletBreakingChange attribute for the New-AzDnsResolverDomainList expanded variant.

[Copilot]

The where.subject: PolicyDnsSecurityRule selector does not match the actual generated cmdlet subject (DnsResolverPolicyDnsSecurityRule), so these breaking-change directives (and the existing preview-announcement selector that also uses PolicyDnsSecurityRule) won't apply to New-AzDnsResolverPolicyDnsSecurityRule / Update-AzDnsResolverPolicyDnsSecurityRule. Update the subject matcher (e.g., DnsResolverPolicyDnsSecurityRule, or a regex that matches the generated subject) so the intended breaking-change annotations are emitted on those cmdlets.

[Copilot]

The changelog mentions that Invoke-AzDnsResolverBulkDnsResolverDomainList “will be introduced in the upcoming release”, but there’s no such cmdlet implementation in this PR/repo (only this mention). To avoid misleading users, consider rephrasing to reference the specific planned Az/module version (e.g., Az v16.0.0 / module 2.0.0) or “a future release”, consistent with the breaking-change effective date in the AutoRest config.

Suggested change

	- Parameter `Domain` is no longer mandatory on `New-AzDnsResolverDomainList`. Domain lists will support bulk upload via the new cmdlet `Invoke-AzDnsResolverBulkDnsResolverDomainList`, which will be introduced in the upcoming release.
	- Parameter `Domain` is no longer mandatory on `New-AzDnsResolverDomainList`. Domain lists will support bulk upload via the new cmdlet `Invoke-AzDnsResolverBulkDnsResolverDomainList`, which is planned for a future release.