[ { "type": "api-change", "category": "CodeCommit", "description": "This release includes the DeleteBranch API and a change to the contents of a Commit object." }, { "type": "api-change", "category": "DatabaseMigrationService", "description": "This change includes addition of new optional parameter to an existing API" }, { "type": "api-change", "category": "ElasticBeanstalk", "description": "Added the ability to add, delete or update Tags" }, { "type": "api-change", "category": "RDS", "description": "You can now call DescribeValidDBInstanceModifications to learn what modifications you can make to your DB instance. You can use this information when you call ModifyDBInstance." }, { "type": "api-change", "category": "Polly", "description": "Amazon Polly exposes two new voices: \"Matthew\" (US English) and \"Takumi\" (Japanese)" } ]