Good news... thanks to Ian, he put together a Hudson project for Jopr Server builds.
This is a CI build - so it should track trunk/HEAD. If you ever want to play with the latest and greatest, grab the Jopr Server container build here:
http://hudson.jboss.org/hudson/job/Jopr/
Remember, this contains both server AND agent (just run the server and you can download the agent binary from the server at http://localhost:7080/agentupdate/download)
And of course, because it is from trunk/HEAD, it will not only have the latest-n-greatest features/enhancements, it will also have the latest-n-greatest bugs too :) So, only use this for testing or playing.