Yes this has changed and the ServiceClientFactoryProperties.DSC_DEFAULT_EJB_ENDPOINT is now "remote://[hostname]:4447"
I would swap over to SOAP though as I'm sure all services are available using the default SOAP Endpoint. Check the /sdk directory in the AEM Forms JBoss installation for sample files and invocations.
According to the documentation the ejb-mode has better performance, we use this services a lot so i'm a bit worried about changing to soap.
And i mange to get it working with a couple of services but NOT the ConvertPdfServiceClient(toImage2-method). Soap-mode works.
"The EJB mode uses the RMI/IIOP protocol, and the performance of the EJB mode is better than the performance of the SOAP mode."
Problem sovled with ConvertPdfServiceClient, my standalone java-client didn't set the globalDocumentStorageRootDir.