Lubuntu 16.04 LTS was officially released as part of Ubuntu 16.04 LTS Official Flavors. This release ships with the latest build of LXDE Desktop Environment and powered by long-term suported of Linux Kernel Series 4.4. Also, get artwork improvements for both the desktop theme and the icons, various updates to most of the LXDE components, Support GNOME 3.18 packages, still using lubuntu software manager as default software manager, the removal of the lubuntu-extra-sessions component from the default install, and several bug fixes.
Released as LTS version, Lubuntu 16.04 LTS will receive software updates and security patches for a period of three years. For more details about this release you can refer to Lubuntu 16.04 LTS release notes.