add node 20 as a preview supported language

Author: hossam-nasr

articles/azure-functions/create-first-function-cli-node.md

@@ -31,7 +31,7 @@ Before you begin, you must have the following prerequisites:
     + The Azure [Az PowerShell module](/powershell/azure/install-azure-powershell) version 5.9.0 or later.
 
 ::: zone pivot="nodejs-model-v3" 
-+ [Node.js](https://nodejs.org/) version 18 or 16. 
++ [Node.js](https://nodejs.org/) version 20 (preview), 18 or 16. 
 ::: zone-end
 
 ::: zone pivot="nodejs-model-v4" 
@@ -148,18 +148,18 @@ Each binding requires a direction, a type, and a unique name. The HTTP trigger h
     # [Azure CLI](#tab/azure-cli)
 
     ```azurecli
-    az functionapp create --resource-group AzureFunctionsQuickstart-rg --consumption-plan-location <REGION> --runtime node --runtime-version 18 --functions-version 4 --name <APP_NAME> --storage-account <STORAGE_NAME>
+    az functionapp create --resource-group AzureFunctionsQuickstart-rg --consumption-plan-location <REGION> --runtime node --runtime-version 20 --functions-version 4 --name <APP_NAME> --storage-account <STORAGE_NAME>
     ```
 
-    The [az functionapp create](/cli/azure/functionapp#az-functionapp-create) command creates the function app in Azure. It's recommended that you use the latest version of Node.js, which is currently 18. You can specify the version by setting `--runtime-version` to `18`.
+    The [az functionapp create](/cli/azure/functionapp#az-functionapp-create) command creates the function app in Azure. It's recommended that you use the latest version of Node.js, which is currently 20. You can specify the version by setting `--runtime-version` to `20`. Note that Node 20 support is currently in preview.
 
     # [Azure PowerShell](#tab/azure-powershell)
 
     ```azurepowershell
-    New-AzFunctionApp -Name <APP_NAME> -ResourceGroupName AzureFunctionsQuickstart-rg -StorageAccount <STORAGE_NAME> -Runtime node -RuntimeVersion 18 -FunctionsVersion 4 -Location <REGION>
+    New-AzFunctionApp -Name <APP_NAME> -ResourceGroupName AzureFunctionsQuickstart-rg -StorageAccount <STORAGE_NAME> -Runtime node -RuntimeVersion 20 -FunctionsVersion 4 -Location <REGION>
     ```
 
-    The [New-AzFunctionApp](/powershell/module/az.functions/new-azfunctionapp) cmdlet creates the function app in Azure. It's recommended that you use the latest version of Node.js, which is currently 18. You can specify the version by setting `--runtime-version` to `18`.
+    The [New-AzFunctionApp](/powershell/module/az.functions/new-azfunctionapp) cmdlet creates the function app in Azure. It's recommended that you use the latest version of Node.js, which is currently 20. You can specify the version by setting `--runtime-version` to `20`. Note that Node 20 support is currently in preview.
 
     ---
 

articles/azure-functions/functions-reference-node.md

@@ -30,8 +30,8 @@ The following table shows each version of the Node.js programming model along wi
 
 | [Programming Model Version](https://www.npmjs.com/package/@azure/functions?activeTab=versions) | Support Level | [Functions Runtime Version](./functions-versions.md) | [Node.js Version](https://github.com/nodejs/release#release-schedule) | Description |
 | ---- | ---- | --- | --- | --- |
-| 4.x | Preview | 4.16+ | 18.x | Supports a flexible file structure and code-centric approach to triggers and bindings. |
-| 3.x | GA | 4.x | 18.x, 16.x, 14.x | Requires a specific file structure with your triggers and bindings declared in a "function.json" file |
+| 4.x | Preview | 4.16+ | 20.x (Preview), 18.x | Supports a flexible file structure and code-centric approach to triggers and bindings. |
+| 3.x | GA | 4.x | 20.x (Preview), 18.x, 16.x, 14.x | Requires a specific file structure with your triggers and bindings declared in a "function.json" file |
 | 2.x | GA (EOL) | 3.x | 14.x, 12.x, 10.x | Reached end of life (EOL) on December 13, 2022. See [Functions Versions](./functions-versions.md) for more info. |
 | 1.x | GA (EOL) | 2.x | 10.x, 8.x | Reached end of life (EOL) on December 13, 2022. See [Functions Versions](./functions-versions.md) for more info. |
 

includes/functions-requirements-visual-studio-code-node.md

@@ -8,7 +8,7 @@ ms.author: glenga
 
 + An Azure account with an active subscription. [Create an account for free](https://azure.microsoft.com/free/?ref=microsoft.com&utm_source=microsoft.com&utm_medium=docs&utm_campaign=visualstudio).
 
-+ [Node.js 18.x](https://nodejs.org/en/download/releases/) or [Node.js 16.x](https://nodejs.org/en/download/releases/). Use the `node --version` command to check your version.  
++ [Node.js 18.x](https://nodejs.org/en/download/releases/) or [Node.js 20.x (preview)](https://nodejs.org/en/download/releases/). Use the `node --version` command to check your version.  
 
 + [Visual Studio Code](https://code.visualstudio.com/) on one of the [supported platforms](https://code.visualstudio.com/docs/supporting/requirements#_platforms).
 

includes/functions-supported-languages.md

@@ -77,6 +77,7 @@ The following table shows the language versions supported for Node.js functions.
 | [Node.js 18](https://endoflife.date/nodejs) | GA | April, 2025|
 | [Node.js 16](https://endoflife.date/nodejs) | GA | September 11, 2023<sup>\*</sup> |
 | [Node.js 14](https://endoflife.date/nodejs) | GA | April 30, 2023<sup>\*</sup> |
+| [Node.js 20](https://endoflife.date/nodejs) | Preview | April 30, 2026 |
 
 <sup>\*</sup>Support on Functions extended until June 30, 2024.