Today at the TechEd conference, Microsoft announced the release of enhancements to Service Bus as part of the Windows Azure AppFabric CTP May release, and the upcoming release of the AppFabric Developer Tools and Application Manager as part of the Windows Azure AppFabric CTP June release.
"Service Bus is already a production service supported by a full SLA. We also have a CTP version of the service showcasing future enhancements in our LABS previews environment. Today we've released the Windows Azure AppFabric CTP May release that adds more comprehensive pub/sub capabilities to the Windows Azure platform which enhance and enable new scenarios," Microsoft revealed.
The Service Bus enhancements include capabilities that enable more advanced pub/sub messaging through Queues with a durable store and Topics that enable subscriptions.
In addition, these enhancements enable connectivity to Service Bus from any platform or operating system through the REST/HTTP API. For example, it is possible for Java and PHP applications to connect to the Service Bus using the REST/HTTP API.
The enhancements to Service Bus are available on LABS previews environment. So be sure to login and start checking out these new capabilities.
You should also download the new Windows Azure AppFabric SDK V2.0 CTP -- May Update in order to be able to use these capabilities. Please remember that there are no costs associated with using the CTPs, but they are not backed up by any SLA.