[WXP] Document RibbonApi 1.3 requirement set

docs/requirement-sets/common/ribbon-api-requirement-sets.md

@@ -1,7 +1,7 @@
 ---
 title: Ribbon API requirement sets
 description: Specifies which Office platforms and builds support the dynamic ribbon APIs.
-ms.date: 10/17/2025
+ms.date: 07/30/2026
 ms.topic: overview
 ms.localizationpriority: medium
 ---
@@ -10,16 +10,24 @@ ms.localizationpriority: medium
 
 Requirement sets are named groups of API members. Office Add-ins use requirement sets specified in the manifest or use a runtime check to determine whether an Office application supports APIs that an add-in needs. For more information, see [Office versions and requirement sets](/office/dev/add-ins/develop/office-versions-and-requirement-sets).
 
-The Ribbon API set supports programmatic control of when custom add-in commands (that is, custom ribbon buttons and menu items) are enabled and disabled and when contextual tabs appear on the ribbon.
+The Ribbon API requirement sets let add-ins programmatically control custom ribbon elements. Add-ins can:
+
+- Enable or disable add-in commands.
+- Show contextual tabs on the ribbon.
+- Show or hide commands on a custom tab.
 
 ## Support
 
-`RibbonApi 1.1` is available with **Excel**, **PowerPoint**, and **Word**.  `RibbonApi 1.2` is only available with **Excel**. Both are only for use with **task pane add-ins**. The following table lists the Ribbon API requirement sets, the supported platforms, and the **minimum** builds or versions where applicable.
+The following table lists the Ribbon API requirement sets, supported applications and platforms, and the **minimum** builds or versions where applicable.
+
+| Requirement set | Applications | Office on the web | Office on Windows<br>(Microsoft 365 subscription) | Office on Windows<br>(retail perpetual) | Office on Windows<br>(volume-licensed perpetual/[LTSC](/office/dev/add-ins/resources/resources-glossary#long-term-service-channel-ltsc)) | Office on Mac | Office on iOS | Outlook on Android |
+|:-----|:-----|:-----|:-----|:-----|:-----|:-----|:-----|:-----|
+| RibbonApi 1.3 | <ul><li>Excel</li><li>PowerPoint</li><li>Word</li></ul> | Supported | Version 2606 (Build 20112.15190) | Version 2606 (Build 20112.15190) | Not supported | Version 16.109.1 (260512.115) | Not supported | Not supported |
+| RibbonApi 1.2 | <ul><li>Excel</li></ul> | Supported | Version 2102 (Build 13801.20294) | Version 2102 (Build 13801.20294) | Office 2021: Version 2108 (Build 14326.20454) | Version 16.53 (21080600) | Not supported | Not supported |
+| RibbonApi 1.1 | <ul><li>Excel</li><li>PowerPoint</li><li>Word</li></ul> | Supported | Version 2002 (12527.20880) | Version 2006 (Build 13001.20266) | Office 2021: Version 2108 (Build 14326.20454) | Version 16.38 (20061401) | Not supported | Not supported |
 
-| Requirement set | Office on the web | Office on Windows<br>(Microsoft 365 subscription) | Office on Windows<br>(retail perpetual) | Office on Windows<br>(volume-licensed perpetual/[LTSC](/office/dev/add-ins/resources/resources-glossary#long-term-service-channel-ltsc)) | Office on Mac | Office on iOS | Outlook on Android |
-|:-----|:-----|:-----|:-----|:-----|:-----|:-----|:-----|
-| RibbonApi 1.2 | Supported | Version 2102 (Build 13801.20294) | Version 2102 (Build 13801.20294) | Office 2021: Version 2108 (Build 14326.20454) | Version 16.53 (21080600) | Not supported | Not supported |
-| RibbonApi 1.1 | Supported | Version 2002 (12527.20880) | Version 2006 (Build 13001.20266) | Office 2021: Version 2108 (Build 14326.20454) | Version 16.38 (20061401) | Not supported | Not supported |
+> [!NOTE]
+> `RibbonApi 1.1` and `RibbonApi 1.2` are only for use with task pane add-ins.
 
 To find out more about versions and build numbers, see:
 
@@ -31,15 +39,19 @@ For information about Common API requirement sets, see [Office Common API requir
 
 ## Ribbon API 1.1
 
-The Ribbon API 1.1 includes support for enabling and disabling Add-in Commands. To learn the patterns for this functionality, see [Change the availability of add-in commands](/office/dev/add-ins/design/disable-add-in-commands). For details about the API, see the [Office.ribbon](/javascript/api/office/office.ribbon) reference topic.
+Ribbon API 1.1 includes support for enabling and disabling Add-in Commands. To learn the patterns for this functionality, see [Change the availability of add-in commands](/office/dev/add-ins/design/disable-add-in-commands). For details about the API, see the [Office.ribbon](/javascript/api/office/office.ribbon) reference topic.
 
 ## Ribbon API 1.2
 
-The Ribbon API 1.2 adds support for contextual tabs. For more information, see [Create custom contextual tabs in Office Add-ins](/office/dev/add-ins/design/contextual-tabs).
+Ribbon API 1.2 adds support for contextual tabs. For more information, see [Create custom contextual tabs in Office Add-ins](/office/dev/add-ins/design/contextual-tabs).
 
 > [!NOTE]
 > The **RibbonApi 1.2** requirement set isn't yet supported in the manifest, so you shouldn't specify it in the manifest's **\<Requirements\>** section.
 
+## Ribbon API 1.3
+
+Ribbon API 1.3 adds support to dynamically show or hide add-in commands on a custom tab.
+
 ## See also
 
 - [Office versions and requirement sets](/office/dev/add-ins/develop/office-versions-and-requirement-sets)