[ { "type": "api-change", "category": "TranscribeService", "description": "MediaFormat is now optional for StartTranscriptionJob API." }, { "type": "api-change", "category": "EKS", "description": "Amazon EKS DescribeCluster API returns a new OIDC issuer field that can be used to create OIDC identity provider for IAM for Service Accounts feature." }, { "type": "api-change", "category": "SFN", "description": "Added support for new history events" } ]