WordPress support for the atom:link element in RSS feeds has gone live in both the standalone and multiuser versions of the software. The RSS Profile recommends that feeds include atom:link to identify the feed's URL.
<atom:link href="http://photomatt.net/feed/" rel="self" type="application/rss+xml" />
You can see the element in WordPress creator Matt Mullenweg's RSS feed, which is published with version "2.4-bleeding," and the Strange Maps feed published with WordPress MU. The official release of WordPress 2.4 is scheduled for December.
