Standard Ubuntu, with its Gnome roots and Unity interface may get most of the attention, but there are many different varieties of the world's most popular Linux distro. Most, like Xubuntu and Edubuntu, are community efforts entirely maintained by volunteers. Now Kubuntu, the KDE-sporting edition will be joining the ranks of the unofficial. After seven years, Canonical has decided to focus all of its efforts on Ubuntu proper, and will be ending paid support for Kubuntu with version 12.04. That doesn't mean that the variant is dead, only that it might not be a great choice for enterprise customers. Check out the source for the full letter from (former) lead developer Jonathan Riddell announcing the change.