diff --git a/WindowsForms-toc.html b/WindowsForms-toc.html
index 6b3ed39c7..980b17279 100644
--- a/WindowsForms-toc.html
+++ b/WindowsForms-toc.html
@@ -6101,7 +6101,7 @@
Release Notes
- - 2025 Volume 3 - v31.*
- 2025 Volume 2 - v30.*
- 2025 Volume 1 - v29.*
- 2024 Volume 4 - v28.*
- 2024 Volume 3 - v27.*
- 2024 Volume 2 - v26.*
- Weekly Nuget Release
- v26.2.14
+ - 2025 Volume 3 - v31.*
- 2025 Volume 2 - v30.*
- 2025 Volume 1 - v29.*
- 2024 Volume 4 - v28.*
- 2024 Volume 3 - v27.*
- 2024 Volume 2 - v26.*
- 2024 Volume 1 - v25.*
- 2023 Volume 4 - v24.*
- 2023 Volume 3 - v23.*
- 2023 Volume 2 - v22.*
- 2023 Volume 1 - v21.*
- 2022 Volume 4 - v20.4.0.*
- 2022 Volume 3 - v20.3.0.*
- 2022 Volume 2 - v20.2.0.*
- 2022 volume 1 - v20.1.0.*
- 2021 Volume 4 - v19.4.0.*
- 2021 volume 3 - v19.3.0.*
- 2021 Volume 2 - v19.2.0.*
- 2021 Volume 1 - v19.1.0.*
- 2020 Volume 4 - v18.4.0.*
- 2020 Volume 3 - v18.3.0.*
- 2020 Volume 2 - v18.2.0.*
- 2020 Volume 1 - v18.1.0.*
- 2019 Volume 4 - v17.4.0.*
- 2019 Volume 3 - v17.3.0.*
diff --git a/WindowsForms/Release-notes/v31.1.21.md b/WindowsForms/Release-notes/v31.1.21.md
new file mode 100644
index 000000000..79e56cd5a
--- /dev/null
+++ b/WindowsForms/Release-notes/v31.1.21.md
@@ -0,0 +1,103 @@
+---
+title: Essential Studio® for Windows Forms Release Notes - v31.1.21
+description: Learn here about the controls in the Essential Studio® for Windows Forms Weekly Nuget Release - Release Notes - v31.1.21
+platform: windowsforms
+documentation: ug
+---
+
+# Essential Studio® for Windows Forms - v31.1.21 Release Notes
+
+{% include release-info.html date="September 23, 2025" version="v31.1.21" passed="8586" failed="0" %}
+
+{% directory path: _includes/release-notes/v31.1.21 %}
+
+{% include {{file.url}} %}
+
+{% enddirectory %}
+
+## Test Results
+
+| Component Name | Test Cases | Passed | Failed | Remarks |
+|---------------|------------|--------|--------|---------|
+| Autocomplete | 58 | 58 | 0 | All Passed |
+| AutoLabel | 3 | 3 | 0 | All Passed |
+| ButtonAdv | 14 | 14 | 0 | All Passed |
+| Calculate | 131 | 131 | 0 | All Passed |
+| Carousel | 7 | 7 | 0 | All Passed |
+| CheckBoxAdv | 124 | 124 | 0 | All Passed |
+| ColorPicker | 27 | 27 | 0 | All Passed |
+| ColorPickerButton | 1 | 1 | 0 | All Passed |
+| ColorPickerUIAdv | 1 | 1 | 0 | All Passed |
+| ColorUIControl | 2 | 2 | 0 | All Passed |
+| CombinedControls | 297 | 297 | 0 | All Passed |
+| ComboBoxAdv | 339 | 339 | 0 | All Passed |
+| ComboDropDown | 2 | 2 | 0 | All Passed |
+| CommandBarController | 1 | 1 | 0 | All Passed |
+| CurrencyEdit | 1 | 1 | 0 | All Passed |
+| DateTimeEdit | 93 | 93 | 0 | All Passed |
+| DateTimePickerAdv | 44 | 44 | 0 | All Passed |
+| Digital Gauge | 6 | 6 | 0 | All Passed |
+| DigitalGauge | 1 | 1 | 0 | All Passed |
+| DockingManager | 1658 | 1658 | 0 | All Passed |
+| DomainUpDownExt | 3 | 3 | 0 | All Passed |
+| DoubleTextBox | 3 | 3 | 0 | All Passed |
+| EditControl | 351 | 351 | 0 | All Passed |
+| FontListBox | 2 | 2 | 0 | All Passed |
+| GradientPanelExt | 4 | 4 | 0 | All Passed |
+| GridGroupingControl | 15 | 15 | 0 | All Passed |
+| GroupBar | 37 | 37 | 0 | All Passed |
+| GroupView | 2 | 2 | 0 | All Passed |
+| HTMLUIControl | 53 | 53 | 0 | All Passed |
+| ImageStreamer | 1 | 1 | 0 | All Passed |
+| InputControls_HighContrastSupport | 12 | 12 | 0 | All Passed |
+| InputControls_Office2019ThemeSupport | 8 | 8 | 0 | All Passed |
+| LinearGauge | 58 | 58 | 0 | All Passed |
+| MainFrameBarManager | 3 | 3 | 0 | All Passed |
+| MainFrameBarManager_Jira | 2 | 2 | 0 | All Passed |
+| MenuPackage | 79 | 79 | 0 | All Passed |
+| MetroForm | 26 | 26 | 0 | All Passed |
+| MonthCalendarAdv | 1 | 1 | 0 | All Passed |
+| MultiColumnComboBox | 8 | 8 | 0 | All Passed |
+| MultiColumnTreeview | 96 | 96 | 0 | All Passed |
+| MultiSelectionComboBox | 7 | 7 | 0 | All Passed |
+| NavigationDrawer | 52 | 52 | 0 | All Passed |
+| NavigationView | 1 | 1 | 0 | All Passed |
+| NumericUpDownExt | 6 | 6 | 0 | All Passed |
+| Office2007Form | 60 | 60 | 0 | All Passed |
+| PercentTextBox | 1 | 1 | 0 | All Passed |
+| PivotChart | 122 | 122 | 0 | All Passed |
+| PivotGrid | 19 | 19 | 0 | All Passed |
+| PivotGridControl | 189 | 189 | 0 | All Passed |
+| PopupMenu | 4 | 4 | 0 | All Passed |
+| ProgressBarAdv | 3 | 3 | 0 | All Passed |
+| RadialGauge | 85 | 85 | 0 | All Passed |
+| RadialMenu | 2 | 2 | 0 | All Passed |
+| RadialSlider | 12 | 12 | 0 | All Passed |
+| RangeSlider | 5 | 5 | 0 | All Passed |
+| RatingControl | 1 | 1 | 0 | All Passed |
+| Ribbon | 54 | 54 | 0 | All Passed |
+| RibbonControlAdv | 1433 | 1433 | 0 | All Passed |
+| SfButton | 4 | 4 | 0 | All Passed |
+| SfCalendar | 1 | 1 | 0 | All Passed |
+| SfComboBox | 94 | 94 | 0 | All Passed |
+| SfDataGrid | 855 | 855 | 0 | All Passed |
+| SfDataPager | 95 | 95 | 0 | All Passed |
+| SfDateTimeEdit | 11 | 11 | 0 | All Passed |
+| SfForm | 23 | 23 | 0 | All Passed |
+| SfListView | 65 | 65 | 0 | All Passed |
+| SfNumericTextBox | 5 | 5 | 0 | All Passed |
+| SfScrollFrame | 1 | 1 | 0 | All Passed |
+| SfTabbedForm | 25 | 25 | 0 | All Passed |
+| SpellCheckerAdv | 51 | 51 | 0 | All Passed |
+| SplashPanel | 2 | 2 | 0 | All Passed |
+| SplitContainerAdv | 10 | 10 | 0 | All Passed |
+| StatusStripEx | 23 | 23 | 0 | All Passed |
+| SuperToolTip | 2 | 2 | 0 | All Passed |
+| TabbedMdiManager | 478 | 478 | 0 | All Passed |
+| TabControlAdv | 724 | 724 | 0 | All Passed |
+| TextBoxExt | 7 | 7 | 0 | All Passed |
+| TrackBarEx | 1 | 1 | 0 | All Passed |
+| TreeNavigator | 17 | 17 | 0 | All Passed |
+| TreeViewAdv | 363 | 363 | 0 | All Passed |
+| XpTaskbar | 98 | 98 | 0 | All Passed |
+| XPToolbar | 1 | 1 | 0 | All Passed |
\ No newline at end of file