KDE Neon is a Linux distribution that offers the best in class of KDE Plasma 6, the most gorgeous and adaptable desktop environment climate for Linux.
Nazrul Hoda Nizami 
Kubuntu and Lubuntu get desktop upgrades, as optional extras
Kubuntu and Lubuntu desktops have been upgraded but you won’t automatically get the new versions. Here’s how to get the optional lifts. There’s only one official flavor of Ubuntu. The standard desktop is GNOME, and if you pay for optional support, that’s the only supported edition. But if you don’t …