Since we're expecting people to have a lot of interest in this release, we wanted to provide some detailed information up-front about exactly what has and has not been released, and suggestions for ways developers can contribute to the project effectively.
People who want to run their own server will need to develop their own world to do soonly a small test world comes with the code.
Unfortunately, that development can't be done with free software, because most of the world creation process depends on proprietary 3-D modeling software. Work is already underway to eliminate those dependencies and use free software alternatives like Blender. This is the next big task that needs to be done to make Ryzom even more useful to the free software community, so if you'd like to help, please see the project page for more information.