diff --git a/.pipelines/MSIXBundle-vPack-Official.yml b/.pipelines/MSIXBundle-vPack-Official.yml
index 997b7c458b..876da9c2af 100644
--- a/.pipelines/MSIXBundle-vPack-Official.yml
+++ b/.pipelines/MSIXBundle-vPack-Official.yml
@@ -22,7 +22,7 @@ variables:
   BuildSolution: $(Build.SourcesDirectory)\dirs.proj
   ReleaseTagVar: ${{ parameters.ReleaseTagVar }}
   BuildConfiguration: Release
-  WindowsContainerImage: 'onebranch.azurecr.io/windows/ltsc2019/vse2022:latest'
+  WindowsContainerImage: 'onebranch.azurecr.io/windows/ltsc2022/vse2022:latest'
   Codeql.Enabled: false  #  pipeline is not building artifacts; it repackages existing artifacts into a vpack
   DOTNET_CLI_TELEMETRY_OPTOUT: 1
   POWERSHELL_TELEMETRY_OPTOUT: 1
@@ -46,6 +46,9 @@ resources:
 extends:
   template: v2/Microsoft.Official.yml@onebranchTemplates
   parameters:
+    featureFlags:
+      WindowsHostVersion:
+        Version: 2022
     platform:
       name: 'windows_undocked' # windows undocked
 
diff --git a/.pipelines/PowerShell-Coordinated_Packages-Official.yml b/.pipelines/PowerShell-Coordinated_Packages-Official.yml
index 380c9c5516..12460e2861 100644
--- a/.pipelines/PowerShell-Coordinated_Packages-Official.yml
+++ b/.pipelines/PowerShell-Coordinated_Packages-Official.yml
@@ -68,7 +68,7 @@ variables:
   - name: LinuxContainerImage
     value: mcr.microsoft.com/onebranch/azurelinux/build:3.0
   - name: WindowsContainerImage
-    value: onebranch.azurecr.io/windows/ltsc2019/vse2022:latest
+    value: onebranch.azurecr.io/windows/ltsc2022/vse2022:latest
   - name: CDP_DEFINITION_BUILD_COUNT
     value: $[counter('', 0)]
   - name: ReleaseTagVar
@@ -105,6 +105,7 @@ extends:
       LinuxHostVersion:
           Network: KS3
       WindowsHostVersion:
+          Version: 2022
           Network: KS3
       incrementalSDLBinaryAnalysis: true
     globalSdl:
diff --git a/.pipelines/PowerShell-vPack-Official.yml b/.pipelines/PowerShell-vPack-Official.yml
index fbbf3683db..c49560bf2b 100644
--- a/.pipelines/PowerShell-vPack-Official.yml
+++ b/.pipelines/PowerShell-vPack-Official.yml
@@ -42,7 +42,7 @@ variables:
   - name: BuildConfiguration
     value: Release
   - name: WindowsContainerImage
-    value: 'onebranch.azurecr.io/windows/ltsc2019/vse2022:latest'
+    value: 'onebranch.azurecr.io/windows/ltsc2022/vse2022:latest'
   - name: Codeql.Enabled
     value: false  #  pipeline is not building artifacts; it repackages existing artifacts into a vpack
   - name: DOTNET_CLI_TELEMETRY_OPTOUT
diff --git a/CHANGELOG/7.5.md b/CHANGELOG/7.5.md
index 80b3ee0a8a..d908532ff8 100644
--- a/CHANGELOG/7.5.md
+++ b/CHANGELOG/7.5.md
@@ -1,5 +1,90 @@
 # 7.5 Changelog
 
+## [7.5.5]
+
+### Engine Updates and Fixes
+
+- Fix up `SSHConnectionInfo` ssh PATH checks (#26165) (Thanks @jborean93!)
+
+### General Cmdlet Updates and Fixes
+
+- Close pipe client handles after creating the child ssh process (#26822)
+- Fix the progress preference variable in script cmdlets (#26791) (Thanks @cmkb3!)
+
+### Tools
+
+- Add merge conflict marker detection to `linux-ci` workflow and refactor existing actions to use reusable `get-changed-files` action (#26812)
+- Add reusable `get-changed-files` action and refactor existing actions (#26811)
+- Create GitHub Copilot setup workflow (#26807)
+- Refactor analyze job to reusable workflow and enable on Windows CI (#26799)
+
+### Tests
+
+- Mark flaky `Update-Help` web tests as pending to unblock CI (#26837)
+- Add GitHub Actions annotations for Pester test failures (#26836)
+- Fix `$PSDefaultParameterValues` leak causing tests to skip unexpectedly (#26823)
+- Fix merge conflict checker for empty file lists and filter `*.cs` files (#26813)
+- Update the `Update-Help` tests to use `-Force` to remove read-only files (#26788)
+- Add markdown link verification for PRs (#26407)
+
+### Build and Packaging Improvements
+
+<details>
+
+<summary>
+<p>Update to .NET SDK 9.0.312</p>
+<p>We thank the following contributors!</p>
+<p>@kasperk81, @RichardSlater</p>
+
+</summary>
+
+<ul>
+<li>Revert change to module name ThreadJob (#26997)</li>
+<li>Update branch for release (#26990)</li>
+<li>Fix <code>ConvertFrom-ClearlyDefinedCoordinates</code> to handle API object coordinates (#26987)</li>
+<li>Update CGManifests (#26981)</li>
+<li>Hardcode Official templates (#26968)</li>
+<li>Split TPN manifest and Component Governance manifest (#26967)</li>
+<li>Fix a preview detection test for the packaging script (#26966)</li>
+<li>Correct the package name for .deb and .rpm packages (#26964)</li>
+<li>Bring Release Changes from v7.6.0-preview.6 (#26963)</li>
+<li>Merge the v7.6.0-preview.5 release branch back to master (#26958)</li>
+<li>Fix macOS preview package identifier detection to use version string (#26835)</li>
+<li>Update metadata.json to update the Latest attribute with a better name (#26826)</li>
+<li>Remove unused runCodesignValidationInjection variable from pipeline templates (#26825)</li>
+<li>Update <code>Get-ChangeLog</code> to handle backport PRs correctly (#26824)</li>
+<li>Mirror .NET/runtime ICU version range in PowerShell (#26821) (Thanks @kasperk81!)</li>
+<li>Update the macos package name for preview releases to match the previous pattern (#26820)</li>
+<li>Fix condition syntax for StoreBroker package tasks in MSIX pipeline (#26819)</li>
+<li>Fix template path for rebuild branch check in package.yml (#26818)</li>
+<li>Add rebuild branch support with conditional MSIX signing (#26817)</li>
+<li>Move package validation to package pipeline (#26816)</li>
+<li>Optimize/split windows package signing (#26815)</li>
+<li>Improve ADO package build and validation across platforms (#26814)</li>
+<li>Add log grouping to build.psm1 for collapsible GitHub Actions logs (#26810)</li>
+<li>Remove usage of fpm for DEB package generation (#26809)</li>
+<li>Replace fpm with native macOS packaging tools (pkgbuild/productbuild) (#26801)</li>
+<li>Fix build to only enable ready-to-run for the Release configuration (#26798)</li>
+<li>Fix R2R for fxdependent packaging  (#26797)</li>
+<li>Refactor: Centralize xUnit tests into reusable workflow and remove legacy verification (#26794)</li>
+<li>Replace <code>fpm</code> with native <code>rpmbuild</code> for RPM package generation (#26793)</li>
+<li>Add <code>libicu76</code> dependency to support Debian 13 (#26792) (Thanks @RichardSlater!)</li>
+<li>Specify .NET search by build type (#26408)</li>
+<li>Fix buildinfo.json uploading for preview, LTS, and stable releases (#26773)</li>
+<li>Fix path to <code>metadata.json</code> in channel selection script (#26400)</li>
+<li>Separate store automation service endpoints and resolve <code>AppID</code> (#26266)</li>
+<li>Update a few packages to use the right version corresponding to .NET 9 (#26671)</li>
+<li>Add network isolation policy parameter to vPack pipeline (#26393)</li>
+<li>Convert Azure DevOps Linux Packaging pipeline to GitHub Actions workflow (#26391)</li>
+<li>Integrate Windows packaging into windows-ci workflow using reusable workflow (#26390)</li>
+<li>GitHub Workflow cleanup (#26389)</li>
+<li>Update vPack name (#26221)</li>
+</ul>
+
+</details>
+
+[7.5.5]: https://github.com/PowerShell/PowerShell/compare/v7.5.4...v7.5.5
+
 ## [7.5.4]
 
 ### Build and Packaging Improvements