http://blog.netbsd.org/tnf/entry/netbsd_5_1
NetBSD 5.1 is now available for download. NetBSD 5.1 is the first feature update of the NetBSD 5.0 release branch. It includes security and bug fixes, as well as improved hardware support and new features.
Some highlights include:
* RAIDframe parity maps, which greatly improve parity rewrite times after unclean shutdown * X.Org updates * Support for many more network devices * Xen PAE dom0 support * Xen PCI pass-through support
