The NetBSD Project released NetBSD 5.2 which is the second feature update of the NetBSD 5.0 release branch. It contains selected subset of fixes to improve security and stability and some new features and enhancements. You can read release announcement here and release notes here for more information. Look at http://www.netbsd.org/mirrors/ to download all necessary files or at http://www.netbsd.org/mirrors/torrents/ for torrent files. If you are a new user I would recommend 6.0 release. Upgrade on your setup requirements otherwise.