Announcing the LocalStack for AWS 2026.03.0 Release

LocalStack for AWS 2026.3.0 introduces significant updates, including a shift to a single, consolidated Docker image that requires an authentication token and a transition from semantic to calendar versioning. The release features a revamped LocalStack CLI, enhancing the developer experience with simplified installation and automatic authentication, alongside a new Terminal UI and improved log management. EKS and CloudWatch have integrated Resource Groups Tagging API, enhancing resource management, while EC2 Fleet APIs now trigger real infrastructure rather than mock responses. The release removes CI credit limitations across all tiers, introduces support for the EU sovereign cloud partition, and includes various updates such as improved Kafka support and the migration of IAM and STS services to LocalStack's core library. Additionally, the version addresses security vulnerabilities by updating the default Postgres version and deprecates the ACTIVATE_PRO environment variable due to image consolidation.