(via www.ubuntugeek.com)
The Ubuntu team is pleased to announce Ubuntu 9.04 Desktop and Server editions and Ubuntu Netbook Remix, continuing Ubuntu’s tradition of integrating the latest and greatest open source technologies into a high-quality, easy-to-use Linux distribution.This tutorial will explain how to Upgrade Ubuntu 8.10 (Intrepid Ibix) to Ubuntu 9.04 (Jaunty Jackalope) released on the 23rd March 2009.