This is the initial release of the plug-in. It currently allows reading layer data in GeoJSON. This can for example be used to display data in alternate clients like OpenLayers.
Future release will included REST/JSON access to the Geomajas commands and write access to the layers.
For the release notes, see http://jira.geomajas.org/secure/ReleaseNote.jspa?projectId=10235&version=10419
Watch Geomajas @ the next FOSS4G from Sept 8th to 13th in Portland.