diff --git a/.github/workflows/check_release_notes.yml b/.github/workflows/check_release_notes.yml
new file mode 100644
index 000000000000..f8073d10cd77
--- /dev/null
+++ b/.github/workflows/check_release_notes.yml
@@ -0,0 +1,200 @@
+name: Check release notes
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+    branches:
+        - 'main'
+        - 'release/*'
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  check_release_notes:
+    #if: github.event.issue.pull_request != ''
+    runs-on: ubuntu-22.04
+    steps:
+    - name: Get github ref
+      uses: actions/github-script@v3
+      id: get-pr
+      with:
+        script: |
+          const result = await github.pulls.get({
+            pull_number: context.issue.number,
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+          });
+          return { "pr_number": context.issue.number, "ref": result.data.head.ref, "repository": result.data.head.repo.full_name};
+    - name: Checkout repo
+      uses: actions/checkout@v2
+      with:
+        repository: ${{ fromJson(steps.get-pr.outputs.result).repository }}
+        ref: ${{ fromJson(steps.get-pr.outputs.result).ref }}
+        fetch-depth: 0
+    - name: Check for release notes changes
+      id: release_notes_changes
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      run: |
+        set -e
+        EOF=$(dd if=/dev/urandom bs=15 count=1 status=none | base64)
+
+        # Parse version from eng/Versions.props
+        # For FSarp.Core:
+        # <FSMajorVersion>8</FSMajorVersion>
+        # <FSMinorVersion>0</FSMinorVersion>
+        # <FSBuildVersion>100</FSBuildVersion>
+        # For FCS:
+        # FCSMajorVersion>43</FCSMajorVersion>
+        # <FCSMinorVersion>8</FCSMinorVersion>
+        # <FCSBuildVersion>$(FSBuildVersion)</FCSBuildVersion>
+        # For VS:
+        # <VSMajorVersion>17</VSMajorVersion>
+        # <VSMinorVersion>8</VSMinorVersion>
+
+        _fs_major_version=$(grep -oPm1 "(?<=<FSMajorVersion>)[^<]+" eng/Versions.props)
+        _fs_minor_version=$(grep -oPm1 "(?<=<FSMinorVersion>)[^<]+" eng/Versions.props)
+        _fs_build_version=$(grep -oPm1 "(?<=<FSBuildVersion>)[^<]+" eng/Versions.props)
+        _fcs_major_version=$(grep -oPm1 "(?<=<FCSMajorVersion>)[^<]+" eng/Versions.props)
+        _fcs_minor_version=$(grep -oPm1 "(?<=<FCSMinorVersion>)[^<]+" eng/Versions.props)
+        _fcs_build_version=$_fs_build_version
+        _vs_major_version=$(grep -oPm1 "(?<=<VSMajorVersion>)[^<]+" eng/Versions.props)
+        _vs_minor_version=$(grep -oPm1 "(?<=<VSMinorVersion>)[^<]+" eng/Versions.props)
+
+        FSHARP_CORE_VERSION="$_fs_major_version.$_fs_minor_version.$_fs_build_version"
+        FCS_VERSION="$_fcs_major_version.$_fcs_minor_version.$_fcs_build_version"
+        VISUAL_STUDIO_VERSION="$_vs_major_version.$_vs_minor_version"
+
+        echo "Found F# version: ${FSHARP_CORE_VERSION}"
+        echo "Found FCS version: ${FCS_VERSION}"
+        echo "Found Visual Studio version: ${VISUAL_STUDIO_VERSION}"
+
+        [[ "$FSHARP_CORE_VERSION" =~ ^[0-9]+\.[0-9]+.[0-9]+$ ]] || (echo "Invalid FSharp.Core Version parsed"; exit 1)
+        [[ "$FCS_VERSION" =~ ^[0-9]+\.[0-9]+.[0-9]+$ ]] || (echo "Invalid FCS Version parsed"; exit 1)
+        [[ "$VISUAL_STUDIO_VERSION" =~ ^[0-9]+\.[0-9]+$ ]] || (echo "Invalid Visual Studio Version parsed"; exit 1)
+
+        _release_notes_base_path='docs/release-notes'
+        _fsharp_core_release_notes_path="${_release_notes_base_path}/FSharp.Core/${FSHARP_CORE_VERSION}.md"
+        _fsharp_compiler_release_notes_path="${_release_notes_base_path}/FSharp.Compiler.Service/${FSHARP_CORE_VERSION}.md"
+        _fsharp_language_release_notes_path="${_release_notes_base_path}/Language/preview.md"
+        _fsharp_vs_release_notes_path="${_release_notes_base_path}/VisualStudio/${VISUAL_STUDIO_VERSION}.md"
+
+        readonly paths=(
+            "src/FSharp.Core|${_fsharp_core_release_notes_path}"
+            "src/Compiler|${_fsharp_compiler_release_notes_path}"
+            "src/Compiler/Facilities/LanguageFeatures.fsi|${_fsharp_language_release_notes_path}"
+            "vsintegration/src|${_fsharp_vs_release_notes_path}"
+            ".github|NONEXISTING_NOTES_FOR_TESTING.md"
+        )
+
+        # Check all changed paths
+        RELEASE_NOTES_MESSAGE=""
+        RELEASE_NOTES_MESSAGE_DETAILS=""
+        RELEASE_NOTES_FOUND=""
+        RELEASE_NOTES_CHANGES_SUMMARY=""
+        RELEASE_NOTES_NOT_FOUND=""
+
+        _modified_paths=`gh pr view ${PR_NUMBER} --json files --jq '.files.[].path'`
+
+        for fields in ${paths[@]}
+        do
+            IFS=$'|' read -r path release_notes <<< "$fields"
+            echo "Checking for changed files in: $path"
+
+            # Check if path is in modified files:
+            if [[ "${_modified_paths[@]}" =~ "${path}" ]]; then
+                echo "Found $path in modified files"
+                echo "Checking if release notes modified in: $release_notes"
+                if [[ "${_modified_paths[@]}" =~ "${release_notes}" ]]; then
+                    echo "Found $release_notes in modified files"
+                    RELEASE_NOTES_FOUND+="| \`$path\` | \`$release_notes\` |"
+                    RELEASE_NOTES_FOUND+=$'\n'
+                else
+                    echo "Did not find $release_notes in modified files"
+                    RELEASE_NOTES_NOT_FOUND+="| \`$path\` | \`$release_notes\` |"
+                    RELEASE_NOTES_NOT_FOUND+=$'\n'
+                fi
+            else
+                echo "Nothing found, no release notes required"
+            fi
+
+        done
+
+        if [[ $RELEASE_NOTES_NOT_FOUND != "" ]]; then
+            RELEASE_NOTES_MESSAGE_DETAILS+=$"> [!CAUTION]"
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+=$"> No release notes found for the following paths:"
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+=$">"
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+=$"> Please add an entry with short description of the change to the release notes file as well as link to this pull request."
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+='| Change path      | Release notes path |'
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+='| ---------------- | ------------------ |'
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+="${RELEASE_NOTES_NOT_FOUND}"
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+        fi
+
+        if [[ $RELEASE_NOTES_FOUND != "" ]]; then
+            RELEASE_NOTES_MESSAGE_DETAILS+=$"> :white_check_mark: Found changes and release notes in following paths:"
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+='| Change path      | Release notes path |'
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+='| ---------------- | ------------------ |'
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+            RELEASE_NOTES_MESSAGE_DETAILS+="${RELEASE_NOTES_FOUND}"
+            RELEASE_NOTES_MESSAGE_DETAILS+=$'\n'
+        fi
+
+        RELEASE_NOTES_MESSAGE+=$'## Release notes check\n\n'
+
+        if [[ $RELEASE_NOTES_MESSAGE_DETAILS == "" ]]; then
+            RELEASE_NOTES_MESSAGE+=$'### No release notes required.'
+        else
+            RELEASE_NOTES_MESSAGE+=$'### Release notes required.\n\n'
+            RELEASE_NOTES_MESSAGE+=$RELEASE_NOTES_MESSAGE_DETAILS
+        fi
+
+        echo "release-notes-check-message<<$EOF" >>$GITHUB_OUTPUT
+        echo "${RELEASE_NOTES_MESSAGE}" >>$GITHUB_OUTPUT
+        echo "$EOF" >>$GITHUB_OUTPUT
+
+        if [[ $RELEASE_NOTES_NOT_FOUND != "" ]]; then
+            exit 1
+        fi
+    # Did bot already commented the PR?
+    - name: Find Comment
+      if: success() || failure()
+      uses: peter-evans/find-comment@v2.4.0
+      id: fc
+      with:
+        issue-number: ${{ github.event.pull_request.number }}
+        comment-author: 'github-actions[bot]'
+        body-includes: '<!-- DO_NOT_REMOVE: release_notes_check -->'
+    # If not, create a new comment
+    - name: Create comment
+      if: steps.fc.outputs.comment-id == '' && (success() || failure())
+      uses: peter-evans/create-or-update-comment@v3.1.0
+      with:
+        issue-number: ${{ github.event.pull_request.number }}
+        body: |
+          <!-- DO_NOT_REMOVE: release_notes_check -->
+          ${{steps.release_notes_changes.outputs.release-notes-check-message}}
+        #reactions: rocket
+    # If yes, update the comment
+    - name: Update comment
+      if: steps.fc.outputs.comment-id != '' && (success() || failure())
+      uses: peter-evans/create-or-update-comment@v3.1.0
+      with:
+        comment-id: ${{ steps.fc.outputs.comment-id }}
+        edit-mode: replace
+        body: |
+          <!-- DO_NOT_REMOVE: release_notes_check -->
+          ${{steps.release_notes_changes.outputs.release-notes-check-message}}
+        #reactions: hooray
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index d16b15a6ed02..248476682100 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -283,7 +283,7 @@ stages:
         # We will try to restore both FSharp.Core and FCS and if restore is _successful_, package version needs to be bumped.
         # NOTE: This CI check should only run on the release branches.
         - job: Check_Published_Package_Versions
-          condition: or(startsWith(variables['Build.SourceBranch'], 'refs/heads/release/'), or(startsWith(variables['System.PullRequest.SourceBranch'], 'release/dev'), startsWith(variables['System.PullRequest.TargetBranch'], 'release/dev')))
+          # condition: or(startsWith(variables['Build.SourceBranch'], 'refs/heads/release/'), or(startsWith(variables['System.PullRequest.SourceBranch'], 'release/dev'), startsWith(variables['System.PullRequest.TargetBranch'], 'release/dev')))
           pool:
             vmImage: $(UbuntuMachineQueueName)
           strategy:
diff --git a/docs/release-notes/FSharp.Compiler.Service/8.0.200.md b/docs/release-notes/FSharp.Compiler.Service/8.0.200.md
new file mode 100644
index 000000000000..33e811413027
--- /dev/null
+++ b/docs/release-notes/FSharp.Compiler.Service/8.0.200.md
@@ -0,0 +1 @@
+- Miscellaneous fixes to parens analysis - https://github.com/dotnet/fsharp/pull/16262
\ No newline at end of file
diff --git a/docs/release-notes/FSharp.Core/8.0.200.md b/docs/release-notes/FSharp.Core/8.0.200.md
new file mode 100644
index 000000000000..8bed6454108f
--- /dev/null
+++ b/docs/release-notes/FSharp.Core/8.0.200.md
@@ -0,0 +1 @@
+- More inlines for Result module - https://github.com/dotnet/fsharp/pull/16106
\ No newline at end of file
diff --git a/docs/release-notes/Language/preview.md b/docs/release-notes/Language/preview.md
new file mode 100644
index 000000000000..7d9996a870e4
--- /dev/null
+++ b/docs/release-notes/Language/preview.md
@@ -0,0 +1 @@
+- Feature: Better unmanaged structs handling - https://github.com/dotnet/fsharp/pull/12154
\ No newline at end of file
diff --git a/docs/release-notes/VisualStudio/17.9.md b/docs/release-notes/VisualStudio/17.9.md
new file mode 100644
index 000000000000..7adc4118f71c
--- /dev/null
+++ b/docs/release-notes/VisualStudio/17.9.md
@@ -0,0 +1 @@
+- Respect line limit in quick info popup - https://github.com/dotnet/fsharp/pull/16208
\ No newline at end of file
diff --git a/eng/Versions.props b/eng/Versions.props
index c96ae7ba9995..d09ec8ccaf66 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -12,10 +12,11 @@
   <!-- Version number computation -->
   <PropertyGroup>
     <PreReleaseVersionLabel>beta</PreReleaseVersionLabel>
+    <!-- These have to be in sync with latest release branch -->
     <!-- F# Version components -->
     <FSMajorVersion>8</FSMajorVersion>
     <FSMinorVersion>0</FSMinorVersion>
-    <FSBuildVersion>100</FSBuildVersion>
+    <FSBuildVersion>200</FSBuildVersion>
     <FSRevisionVersion>0</FSRevisionVersion>
     <!-- -->
     <!-- F# Language version -->
@@ -55,8 +56,9 @@
     <FSProductVersion>$(FSToolsMajorVersion).$(FSToolsMinorVersion).$(FSToolsBuildVersion).$(FSToolsRevisionVersion)</FSProductVersion>
   </PropertyGroup>
   <PropertyGroup>
+    <!-- These have to be in sync with latest release branch -->
     <VSMajorVersion>17</VSMajorVersion>
-    <VSMinorVersion>8</VSMinorVersion>
+    <VSMinorVersion>9</VSMinorVersion>
     <VSGeneralVersion>$(VSMajorVersion).0</VSGeneralVersion>
     <VSAssemblyVersionPrefix>$(VSMajorVersion).$(VSMinorVersion).0</VSAssemblyVersionPrefix>
     <VSAssemblyVersion>$(VSAssemblyVersionPrefix).0</VSAssemblyVersion>
diff --git a/src/Compiler/Facilities/LanguageFeatures.fsi b/src/Compiler/Facilities/LanguageFeatures.fsi
index e3d7e7232bc1..a9b1c35db545 100644
--- a/src/Compiler/Facilities/LanguageFeatures.fsi
+++ b/src/Compiler/Facilities/LanguageFeatures.fsi
@@ -111,3 +111,4 @@ type LanguageVersion =
     static member GetFeatureVersionString: feature: LanguageFeature -> string
 
     static member Default: LanguageVersion
+
diff --git a/src/FSharp.Core/prim-types-prelude.fs b/src/FSharp.Core/prim-types-prelude.fs
index 63c370ba332e..9a002450382d 100644
--- a/src/FSharp.Core/prim-types-prelude.fs
+++ b/src/FSharp.Core/prim-types-prelude.fs
@@ -119,3 +119,4 @@ namespace Microsoft.FSharp.Core
     type voidptr = (# "void*" #)
 
     type ilsigptr<'T> = (# "!0*" #)
+
diff --git a/vsintegration/src/Directory.Build.props b/vsintegration/src/Directory.Build.props
index f7a21adf80c9..af52f02d17bb 100644
--- a/vsintegration/src/Directory.Build.props
+++ b/vsintegration/src/Directory.Build.props
@@ -10,3 +10,4 @@
   </PropertyGroup>
 
 </Project>
+