There is a minor change from Cairngorm 2.2 to Cairngorm 2.2.1.
They have changed ServiceLocator to reflect moving of classes to LiveCycle Data Services (fds.swc). The main aim is to align Cairngorm with the moving of SWC libraries in Flex 2.0.1 with Hotfix 2 and LiveCycle Data Services 2.5.x.
Cairngorm was developed to work on request/response communication mode. To work on Data Oriented Architecture is still a challenging task.It seems that Adobe Consulting is working on this area.We can expect some significant changes in next Cairngorm release.I am looking forward to the next big release of Cairngorm with all these changes.