1.14:
 -> forum now lists subforums in viewforum.php
 -> more themes
 -> more XHTML 1.0 compliance ( validity should even be perfect ;)
 -> added <link rel="alternate" type="application/rss+xml" title="Subscribe RSS FEED" href="/rss.php" /> to main.tpl
 -> Every public page _should_ now be valid 
 -> better XHTML compliance for admin and plugins pages
 -> better rewrite index.php and viewforum.php
 -> now shows last post data in viewforum.php for current topics
 -> added a rewrite rule for /last -> /search.php?action=show_new

1.13:

 -> added reputation
 -> added chatbox
 -> added dc:creator in rss feed
 -> now defaults to utf-8 encoding
 -> modified and improved themes
 -> modified mail.tpl
 -> fixed a group security problem ( http://forums.punbb.org/viewtopic.php?pid=68934#p68934 )
 -> added /wormstats ( http://punbb.org/stuff/wormstats/source/ )