One of the most popular distributions among Plasma desktop users, KDE Neon, will be updated
recently coming soon to the latest version of Ubuntu, Ubuntu 18.04. Over the next few days, the KDE Neon developers will work on upgrading and adapting the distribution to the new version of Ubuntu.
KDE Neon was currently based on Ubuntu 16.04, to which all the KDE Project software applied. Resulting a kind of Kubuntu but with rolling release mode, that is, it is constantly updated. And it is that the problem or complication of the transfer is in this same, in happening to the new version like an update more but that does not break the operating system that the users have running.
For many users, KDE Neon is still just another version of Ubuntu that resembles Kubuntu, the official Ubuntu flavor with KDE. However, KDE Neon has the rolling release mode which makes it KDE Neon users get the latest KDE software without having to wait for six months what's between launch and launch. Perhaps this is why KDE Neon has become so popular with Plasma users.
The version move will apply to all existing versions of KDE Neon. KDE Neon have two more versions oriented to developers who use Git. These versions will also be updated to Ubuntu 18.04, both unstable and stable. With which Ubuntu 18.04 will become the core or base of KDE Neon. Something similar will happen with Linux Mint and Bodhi Linux, distributions that will be based on Ubuntu 18.04 but with different philosophies or alternative desktops.
Personally It seems to me a better option to Kubuntu if we look for a distribution with KDE. In addition to being developed by members of the KDE Project team, it is an updated and stable version, unlike other KDE distributions, and its speed is quite remarkable. You can get the KDE Neon installation image from this link, although if you want to try something with KDE and Ubuntu 18.04 you can always opt for Kubuntu.