Kubuntu 15.04 vivid vervet beta 1 has been released by Kubuntu Devs Team brings KDE Plasma 5.2 as default desktop environment, also include KDE Applications 14.12 containing all favourite applications from KDE. This is the 14.12.2 update with bugfixes and translation updates. Several applications have been ported to KDE Frameworks 5 but those which aren’t should fit in seamlessly. Kubuntu 15.04 still development by Kubuntu Developer, it will available in stable version on april 2015.
Kubuntu 15.04 Vivid Vervet Beta 1 video overview and screenshot