The GWT dispatch team announced the 1.2 release. The project implements a command pattern based framework for client/ server communication for GWT applications ontop of the GWT RPC. This approach became quite popular after Ray Ryan’s Best Practices For Architecting Your GWT App session at Google I/O 2009.
The highlights of this release are:
Enhanced Spring integration ( documentation )
Remove need for getActionType() in Action Handlers ( SimpleActionHandler.java )
Better support for intercepting calls on the server side