[ { "type": "enhancement", "category": "Batch", "description": "Starting in JAN 2026, AWS Batch will change the default AMI for new Amazon ECS compute environments from Amazon Linux 2 to Amazon Linux 2023. We recommend migrating AWS Batch Amazon ECS compute environments to Amazon Linux 2023 to maintain optimal performance and security." }, { "type": "api-change", "category": "EKS", "description": "Adds support for RepairConfig overrides and configurations in EKS Managed Node Groups." }, { "type": "api-change", "category": "imagebuilder", "description": "Version ARNs are no longer required for the EC2 Image Builder list-image-build-version, list-component-build-version, and list-workflow-build-version APIs. Calling these APIs without the ARN returns all build versions for the given resource type in the requesting account." } ]