https://www.cnx-software.com/2016/04/21/ubuntu-16-04-lts-xenial-xerus-release/
Ubuntu 16.04 LTS "Xenial Xerus" Release - CNX Software
Apr 23, 2016 - Ubuntu 16.04 Long Term Support (LTS) release of the popular Linux distribution is scheduled for later today. The release codenamed Xenial Xerus will
ubuntu 16 04 lts xenial xerusreleasecnxsoftware