The Lubuntu 19.04 operating system has been released as part of the Ubuntu 19.04 (Disco Dingo) series, a version that brings various enhancements and up-to-date components.
Bundled with the same new features and improvements implemented by Canonical in the Ubuntu 19.04 (Disco Dingo) operating system series, Lubuntu 19.04 is here as the second Lubuntu release to ship with the modern and lightweight LXQt desktop environment by default as the development team’s focus is now only on LXQt, not the old LXDE desktop environment, which is no longer supported.
“This is the second Lubuntu release with LXQt as the main desktop environment. The Lubuntu project, in 18.10 and successive releases, will no longer support the LXDE desktop environment or tools in the Ubuntu archive, and will instead focus on the LXQt desktop environme… (read more)
from Softpedia News / Linux https://news.softpedia.com/news/lubuntu-19-04-released-with-latest-lxqt-desktop-and-latest-calamares-installer-525772.shtml