Release v0.3.21: Add eu-central-1 region support and finalize Claude Sonnet 4.5 Haiku integration

Author: Bob Strahan

CHANGELOG.md

@@ -5,6 +5,8 @@ SPDX-License-Identifier: MIT-0
 
 ## [Unreleased]
 
+## [0.3.21]
+
 ### Added
 
 - **Claude Sonnet 4.5 Haiku Model Support**
@@ -25,6 +27,7 @@ SPDX-License-Identifier: MIT-0
   - Comprehensive model mapping table covering Amazon Nova and Anthropic Claude models
   - Intelligent fallback mappings when direct EU equivalents are unavailable
   - Quick Launch button for eu-central-1 region in README and deployment documentation
+  - IDP CLI now supports eu-central-1 deployment with automatic template URL selection
   - Complete technical documentation in `docs/eu-region-model-support.md` with best practices and troubleshooting
 
 ### Changed

VERSION

@@ -1 +1 @@
-0.3.21-rc2
+0.3.21

idp_cli/idp_cli/cli.py

@@ -35,6 +35,7 @@
 TEMPLATE_URLS = {
     "us-west-2": "https://s3.us-west-2.amazonaws.com/aws-ml-blog-us-west-2/artifacts/genai-idp/idp-main.yaml",
     "us-east-1": "https://s3.us-east-1.amazonaws.com/aws-ml-blog-us-east-1/artifacts/genai-idp/idp-main.yaml",
+    "eu-central-1": "https://s3.eu-central-1.amazonaws.com/aws-ml-blog-eu-central-1/artifacts/genai-idp/idp-main.yaml",
 }