I just wanted to let everyone know that I plan on releasing a phpBB3 module for RavenNuke within the next few months. I have a bunch of things to finish up before it will be completed, but it will happen. If you are using the current bridge, you will be able to upgrade without any issues as it will be using the same basic bridge concept. I plan on having theme integration and user integration for sure, groups integration will be a possibility if it can be done without too many modifications on the RN side.