This hot fix can be downloaded from the SFDC Customer Portal Web UI, using your username and password for support.tibco.com.  Once logged on you can find the hotfix under Download Menu :
AvailableDownloads/BusinessWorks/Plugins/AMQP/6.0.1/hotfix-02

Listed below is a summary of updates included. Please refer to the associated read me document for any additional information.
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Closed Issues in 6.0.1_HF-002 (This Release)

AMQP-205: Fixed AMQPReceiveMessage activity for robust message handling with RabbitMQ when using client acknowledgement mode
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