Kubuntu 15.04 Alpha 1. Jonathan Riddell has announced the availability of the initial development release of Vivid Vervet a family of Ubuntu distribution that will eventually bear the version number 15.04. This first alpha build is available for Kubuntu now with Plasma 5 as the default KDE Lubuntu Ubuntu GNOME and Ubuntu Kylin. From the release announcement The first alpha of Vivid Vervet to become 15.04 has now been released. This alpha features images for Kubuntu Lubuntu Ubuntu GNOME Ubuntu Kylin and Ubuntu Cloud. Kubuntu uses KDE software and now features the new Plasma 5 desktop. Plasma 5 the next generation of KDE Software is still a work in progress but is stable enough for everyday use and it keeps getting better as new versions drop frequently.