The Slackware project definitely needs to learn a thing or two when it comes to release announcments. The latest news on their main page indicates an update from 2005. However, the change log states "Sun Sep 3 01:46:42 CDT 2006: I wasn't planning a Slackware 11.0 release candidate 4, but here we go."
http://www.slackware.com/changelog/current.php?cpu=i386