docs: add workshop release download notice to README

Author: Kalindi-Dev

README.md

@@ -3,6 +3,7 @@
 > [!IMPORTANT]
 > Generative AI can make mistakes. You should consider reviewing all output and costs generated by your chosen AI model and agentic coding assistant. See [AWS Responsible AI Policy](https://aws.amazon.com/ai/responsible-ai/policy/).
 
+
 AI-DLC is an intelligent software development workflow that adapts to your needs, maintains quality standards, and keeps you in control of the process. For learning more about AI-DLC Methodology, read this [blog](https://aws.amazon.com/blogs/devops/ai-driven-development-life-cycle/) and the [Method Definition Paper](https://prod.d13rzhkk8cj2z0.amplifyapp.com/) referred in it.
 
 ## Table of Contents
@@ -20,6 +21,9 @@ AI-DLC is an intelligent software development workflow that adapts to your needs
 
 ---
 
+> [!NOTE]
+> **For workshops, always download the latest release from the [Releases page](https://github.com/awslabs/aidlc-workflows/releases).** Release versions are tested and stable. The `main` branch contains ongoing development changes that may not yet be included in a release.
+
 ## Quick Start
 
 1. Download the latest release zip from the [Releases page](../../releases/latest) to a folder **outside** your project directory (e.g., `~/Downloads`).