Version 1.0.4 of the Amazon SQS Java Messaging Library
- 
Support for the
JMSReplyToDestinationmessage header field, which now correctly persists through Amazon SQS. Use this field to avoid making extra calls to the Amazon SQSGetQueueUrlAPI action. - 
Support for setting the
numberOfMessagesToPrefetchconnection parameter to0. In this mode, messages are retrieved from Amazon SQS only when you make explicitreceive()orreceive(long)calls to message consumers, or when you attach a message listener to a consumer.Note: This mode can result in better performance in cases when handling messages is expensive.