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.
(Originally posted on the Phorum web site)