The Kubuntu team have been busy little bees these last few days, not only have they supplied updates for 12.04 and 12.10 to the latest KDE version, but they have also found time to release Kubuntu 13.04 alpha one today. This release includes the latest testing release of KDE plasma workspaces, applications and platform 4.10 which we reported on a couple of days ago.
Being an alpha release this is in no way intended for use on any PC that requires a stable environment or on production machines. Only install these images if you are able to provide the developers feedback and are prepared for breakage.
Download image are available here.