Update concept-add-on-capabilities.md

Author: laujan

articles/applied-ai-services/form-recognizer/concept-add-on-capabilities.md

@@ -14,10 +14,15 @@ recommendations: false
 ---
 <!-- markdownlint-disable MD033 -->
 
-# Azure Form Recognizer add-on capabilities
+# Azure Form Recognizer add-on capabilities (preview)
 
 **This article applies to:** ![Form Recognizer v3.0 checkmark](media/yes-icon.png) **Form Recognizer v3.0**.
 
+> [!IMPORTANT]
+>
+> * The Form Recognizer Studio query fields extraction feature is currently in gated preview. Features, approaches and processes may change, prior to General Availability (GA), based on user feedback.
+> * Complete and submit the [**Form Recognizer private preview request form**](https://aka.ms/form-recognizer/preview/survey) to request access.
+
 > [!NOTE]
 >
 > Add-on capabilities for Form Recognizer Studio are only available within the Read and Layout models for the `2023-02-28-preview` release.
@@ -110,4 +115,4 @@ The `ocr.font` capability extracts all font properties of text extracted in the
 
 > [!div class="nextstepaction"]
 > Learn more:
-> [**Read model**](concept-read.md) [**Layout model**](concept-layout.md).
+> [**Read model**](concept-read.md) [**Layout model**](concept-layout.md).