I think I have finished the initial visual changes to the Phorum 5.2 template. I still have some logistic changes (like making all URL vars exist in a URL array instead of vars like another_thing_to_link_url). If you have a second, please give it a run though. Give me your thoughts and see if I missed any pages.
As Thomas has said, we have started working on 5.2. I had wanted to redo the template for 5.1, but by the time that came up on the list, there was so much already done to the code, I did not want to hold it back. I know some of you went to a lot of trouble to change your 5.0 templates to work with 5.1. Keep in mind that 5.2 may very well be a year or more off in the future. We don't release major changes as stable on a whim.
For those that want to keep up with the new template, you can see it at http://dev.phorum.org/phorum5-dev/. Keep in mind that some or all of it could be broken at any given time.