The next version of phpBB (which this forum runs on) will be officiallyu released on Thursday.
http://www.phpbb.com/community/viewtopi ... 4&t=611789
Here's a full comparison between phpBB2 and phpBB3.
http://www.phpbb.com/about/features/
I'll probably install it next weekend, so long as no problems appear when I to a test run