http://www.phpbb.com/phpBB/viewtopic.php?f=14&t=336756
But it looks to be a monster of an update, especially if you have a heavily modified board.
I hear that there are one or two bugs in the code too.
Does anyone have a any thoughts about moving a phpBB 2.0.17 board to vBulletin, because this may be a faster and more reliable option?