The new Trailblazer will be using the new core services available from the JBoss ESB 4.0, some of which are:
The basic premise of the trailblazer is still the same as the one released with the Beta. A client is shopping around for bank quotes for a loan. A Loan Broker application receives those requests and is responsible for sending the requests to all banks, and receiving the quote responses back and then finally a list of quotes is sent back to the client.
The diagram below shows from a high level the interactions which will take place in the trailblazer: