The NetBSD Project is pleased to announce that version 3.1 of the NetBSD operating system is now available in both source and binary form. NetBSD is a general-purpose Open Source operating system that provides interfaces for running a wide range of applications on a big number of different hardware platforms, all from one source tree. NetBSD 3.1 contains many bugfixes, security updates, new drivers and new features like support for Xen3 DomU.
Link: NetBSD.org