Kubuntu 14.04 (32bit/64bit) VM images are here
Kubuntu team released latest version of their OS 14.04, it is shipped with latest KDE 4.13.0: “Welcome to Kubuntu 14.04 LTS, a brand new long-term supported version with the latest KDE software to enjoy. Long-term support means that bug fixes and security updates will be added for the next 5 years, so you can be safe to use it until 2019. New releases of important KDE software will also be available from the Kubuntu Updates and Kubuntu Backports PPAs. Software highlights: the KDE Applications and Platform 4.13 release introduces a greatly improved semantic search as well as stabilization and improvements in key applications like Okular; Mozilla Firefox 28 as default web browser; Muon Suite 2.2 brings additional improvements to our Software Center applications….” You can read release announcement here.
You can download VDI image for VirtualBox & VMDK image for VMware from here.