While tensions appeared eased yesterday between the Ubuntu and Kubuntu camps with Jonathan Riddell stepping down from his leadership roles that may not be the end of the story.
Kubuntu's future is now being put under the microscope. In particular, the Kubuntu 15.10 Alpha 1 release notes mention at the top, "The Kubuntu team are committed to releasing 15.10 in October. Updates, bug fixes and future releases are currently uncertain." Basically the official statement is that the future past October's release of Kubuntu 15.10 is uncertain for this KDE flavor of Ubuntu. Guess we'll see how this situation plays out in a few months time