Ubuntu 8.10(Intrepid Ibex) is now available for free download. Also you can send a request at www.shipit.ubuntu.com for free cds. Also you can request kubuntu cd at www.shipit.kubuntu.com From these distribution mentioned above is free of charge. you can also buy the DVDs at the same site. New versions will be released for every 6 months. visit the sites and enjoy using linux. Usually the release will be in April and october.