[ { "type": "api-change", "category": "SQS", "description": "MD5 Validation of `MessageAttributes` is now being performed on `ReceiveMessage` calls. SQS uses a custom encoding for generating the hash input, [details on that scheme are available here.](http:\/\/docs.aws.amazon.com\/AWSSimpleQueueService\/latest\/SQSDeveloperGuide\/sqs-message-attributes.html#sqs-attrib-md5)" }, { "type": "api-change", "category": "ResourceGroupsTaggingAPI", "description": "You can now specify the number of resources returned per page in GetResources operation, as an optional parameter, to easily manage the list of resources returned by your queries." } ]