Update What's New for Developers: March 2026 highlights

- Add March 2026 highlights section covering:
  - Agentic AI tools page (Learn MCP Server, WinUI 3 Copilot plugin)
  - WinApp CLI cross-framework guides (.NET, C++, Rust, Flutter, Electron, Tauri)
  - MapControl documentation
  - Materials/in-app acrylic dedicated docs
  - Store API updates (unpackaged install check, PDP open)
  - Iconography docs reorganization
- Move February 2026 highlights to Previous highlights
- Update ms.date to 03/10/2026
- Fix minor formatting issues in previous content
- Add 4 new rows to the documentation table

Co-authored-by: Copilot <[email protected]>

Author: GrantMeStrength

hub/apps/whats-new/whats-new-for-developers.md

@@ -2,7 +2,7 @@
 title: What's new for Windows app developers
 description: Learn what's new for developers in Windows 11 and tools
 keywords: what's new, Windows 11, Windows, developers, WinUI, sdk, tools
-ms.date: 02/23/2026
+ms.date: 03/10/2026
 ms.topic: whats-new
 ms.localizationpriority: medium
 ---
@@ -37,20 +37,24 @@ Find the latest downloads, release notes, and updates for the Windows SDK, Windo
 
 ---
 
-## Highlights – February 2026
+## Highlights – March 2026
+
+- **Agentic AI tools for Windows development**: New guide on enhancing AI coding agents with Windows-specific context — including the [Microsoft Learn MCP Server](/training/support/mcp) for live documentation access, and the [WinUI 3 development plugin for GitHub Copilot](https://github.com/github/awesome-copilot/tree/main/plugins/winui3-development) to generate accurate, modern WinUI 3 code — [Agentic AI tools for Windows](../dev-tools/agentic-tools.md).
+- **WinApp CLI cross-framework guides**: The Windows App Development CLI (public preview) now has step-by-step guides for adding Windows capabilities to apps built with **.NET, C++, Rust, Flutter, Electron, and Tauri** — including packaging, identity, AI integration, and notifications — [WinApp CLI guides](../dev-tools/winapp-cli/guides/index.md).
+- **MapControl for WinUI**: New documentation for the [MapControl](/windows/windows-app-sdk/api/winrt/microsoft.ui.xaml.controls.mapcontrol), an interactive map powered by Azure Maps with support for pins, layers, and user interaction — [MapControl guide](../develop/ui/controls/map-control.md).
+- **Materials documentation**: New dedicated pages covering how to use Mica and Acrylic in your WinUI apps — [Materials overview](../develop/ui/materials.md) and [In-app acrylic](../develop/ui/in-app-acrylic.md).
+- **Store API updates**: New sections documenting how to check if an unpackaged app is installed and how to open the Store product detail page for a product — [Send requests to the Store](/windows/uwp/monetize/send-requests-to-the-store).
+- **Iconography documentation reorganized**: App icon and iconography docs have been consolidated into a dedicated [Iconography hub](../design/iconography/index.md) for easier navigation.
+
+Previous highlights:
 
 - **Segoe Fluent Icons Font updated**: The Segoe Fluent Icons Font documentation has been refreshed with the latest icon additions and usage guidance — [View icons](/windows/apps/design/style/segoe-fluent-icons-font).
 - **WinUI terminology clarification**: Updated terminology across documentation for clarity — "WinUI 2" is now referred to as "WinUI for UWP" and "WinUI 3" is now simply "WinUI" to reflect current naming conventions.
 - **Windows Developer Support hub**: New centralized support page with quick help actions, community channels, and Microsoft support contacts — [Get support](/windows/apps/develop/support).
-- **PowerToys**. 0.97.2 release with new features and improvements to existing tools: ([Microsoft PowerToys: Utilities to customize Windows](/windows/powertoys/)
+- **PowerToys** 0.97.2 release with new features and improvements to existing tools — [Microsoft PowerToys: Utilities to customize Windows](/windows/powertoys/).
 - **Windows App SDK release notes**: Refactored and consolidated history from 0.5 through 2.0 — find the latest fixes and APIs in one place ([release notes hub](../windows-app-sdk/release-notes/windows-app-sdk-2-0.md)).
 - **Windows SDK updates**: New overview and detailed release notes to track SDK changes ([overview](/windows/apps/windows-sdk/) · [release notes](/windows/apps/windows-sdk/release-notes)).
-
-
-
-Previous highlights:
-
-- **WinAppCLI public preview**: The Windows App Development CLI is  command-line interface for managing Windows SDKs, packaging, generating app identity, manifests, certificates, and using build tools with any app framework. This tool bridges the gap between cross-platform development and Windows-native capabilities. ([GitHub repo](https://github.com/microsoft/WinAppCli))
+- **WinAppCLI public preview**: The Windows App Development CLI is a command-line interface for managing Windows SDKs, packaging, generating app identity, manifests, certificates, and using build tools with any app framework — ([GitHub repo](https://github.com/microsoft/WinAppCli)).
 - **Cross Device Resume (XDR) overview**: Introduces Windows app continuity across devices and technologies available to enable XDR scenarios ([overview](../develop/windows-integration/cross-device-resume-overview.md)).
 - **Implement XDR using WNS raw notifications**: Step-by-step guide to integrate app continuity via WNS, including prerequisites and Python/JavaScript examples ([how-to](../develop/windows-integration/integrate-app-continuity.md)).
 - **AI on Windows**: Fresh overview for building AI‑powered experiences on Windows, with entry points to APIs and tooling ([Windows AI overview](/windows/ai/)).
@@ -67,3 +71,7 @@ Previous highlights:
 | [Win32 app isolation overview](/windows/win32/secauthz/app-isolation-overview) | Security and reliability benefits of isolating Win32 apps. |
 | [AppWindow.SetIcon](/windows/windows-app-sdk/api/winrt/microsoft.ui.windowing.appwindow.seticon) | API reference for setting a window icon (Windows App SDK). |
 | [Get started with Windows AI APIs](/windows/ai/apis/get-started) | Quickstart building apps using Windows AI. |
+| [Agentic AI tools for Windows](../dev-tools/agentic-tools.md) | Connect AI coding agents to Windows docs and WinUI 3 best practices. |
+| [WinApp CLI overview](../dev-tools/winapp-cli/index.md) | Command-line tool for packaging, identity, and SDK management across frameworks. |
+| [MapControl](../develop/ui/controls/map-control.md) | Interactive Azure Maps-powered map control for WinUI apps. |
+| [Materials in Windows apps](../develop/ui/materials.md) | Overview of Mica and Acrylic materials for WinUI. |