With another six months of hard work behind us, the Ubuntu team is proud to announce the release of Ubuntu 9.04 “Jaunty Jackalope”. Read more about exciting new features in the press releases for the Desktop edition, Server edition, and Netbook Remix.
At the same time, the 9.04 versions of Kubuntu, Xubuntu, Edubuntu, Mythbuntu, and Ubuntu Studio were released.
Please also see the Release Notes for things to watch out on upgrade, and for a list of known problems.