Update README.md

Author: jarabroz

README.md

@@ -17,6 +17,21 @@ Dlubal Software GmbH
 
 </h1>
 
+# Important Notice: Webservice Maintenance and Dlubal API Transition
+
+**Dear Users,**
+
+We would like to inform you that, effective **23.05.2025**, we are transitioning our existing Webservice into **maintenance mode**. This means that while the Webservice will continue to be available for existing use, **no new enhancements or functionality** will be added to it going forward.
+
+For **new projects**, we highly recommend using the **[Dlubal API](https://www.dlubal.com/en/solutions/dlubal-api/dlubal-api-ii)**, now based on **gRPC**. The new Dlubal API offers improved performance, scalability, and modern capabilities designed to better support your applications.
+
+### Key Points:
+- **Webservice**: Still available for use, but will **not be enhanced** with new functionality.
+- **[Dlubal API (gRPC)](https://www.dlubal.com/en/solutions/dlubal-api/dlubal-api-ii)**: Recommended for **new projects** as it provides better performance and modern features.
+
+If you have any questions or need assistance with transitioning to the Dlubal API, please feel free to reach out to our support team.
+
+Thank you for your continued support!
 
 <h2 align="center">