Hoy mismo acaba de salir la ultima version de Ubuntu, aca les dejo los enlaces para descargar Ubuntu, Kubuntu y Xubuntu

Ubuntu:
(gnome)

CD:
x86 – ubuntu-6.10-desktop-i386.iso
ia64 – ubuntu-6.10-desktop-amd64.iso
ppc – ubuntu-6.10-desktop-powerpc.iso

DVD:
[http]
x86 – ubuntu-6.10-dvd-i386.iso
ia64 – ubuntu-6.10-dvd-amd64.iso
ppc – ubuntu-6.10-dvd-powerpc.iso
[torrent]
x86 – ubuntu-6.10-dvd-i386.iso.torrent
ia64 – ubuntu-6.10-dvd-amd64.iso.torrent
ppc – ubuntu-6.10-dvd-powerpc.iso.torrent

+mirrors: http://www.ubuntu.com/download

Kubuntu:
(kde)

CD:
x86 – kubuntu-6.10-desktop-i386.iso
ia64 – kubuntu-6.10-desktop-amd64.iso
ppc – kubuntu-6.10-desktop-powerpc.iso

DVD:
[http]
x86 – kubuntu-6.10-dvd-i386.iso
ia64 – kubuntu-6.10-dvd-amd64.iso
ppc – kubuntu-6.10-dvd-powerpc.iso
[torrent]
x86 – kubuntu-6.10-dvd-i386.iso.torrent
ia64 – kubuntu-6.10-dvd-amd64.iso.torrent
ppc – kubuntu-6.10-dvd-powerpc.iso.torrent

+mirrors: http://www.kubuntu.org/download.php

Xubuntu:
(xfce)

CD:
x86 – xubuntu-6.10-desktop-i386.iso
ia64 – xubuntu-6.10-desktop-amd64.iso
ppc – xubuntu-6.10-desktop-powerpc.iso
[torrent]
x86 – xubuntu-6.10-desktop-i386.iso.torrent
ia64 – xubuntu-6.10-desktop-amd64.iso.torrent
ppc – xubuntu-6.10-desktop-powerpc.iso.torrent

+mirrors: https://wiki.ubuntu.com/XubuntuReleases