An anonymous reader writes: Today, OpenBSD 5.3 has been released. It has many improvements, updates and new stuff. Also, OpenSMTPD 5.3 is included. This is the first version of OpenSMTPD considered to be ready for production. Many pre-built packages are available for many architectures. OpenBSD 5.3 ships with various Desktop Environments, including Gnome 3.6, KDE 3.5 and Xfce 4.10.