I see this was merged to the 1.2.x branch, and there seems to be a problem with the Jetty bundle. In continuum.log:
2008-08-30 17:18:54,528 [WrapperSimpleAppMain] INFO org.codehaus.plexus.spring.PlexusApplicationContextDelegate - Registering Plexus to Spring XML translation
2008-08-30 17:18:57,027 [WrapperSimpleAppMain] ERROR org.apache.continuum.configuration.DefaultContinuumConfiguration - Unrecognised tag: 'configuration' (position: START_TAG seen ...missions and limitations\nunder the License.\n-->\n\n<configuration />... @21:18)
I mention it here because it's complaining about a <configuration> element.
I have not actually tried to pre-configure anything since it won't start.
(However, with mvn jetty:run in continuum-webapp, the app starts and runs.)