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It draws on the official Xenial Xerus release notes, along with a variety of other sources. This guide is intended as a brief overview of new features and significant changes to the system as a whole, since 14.04 LTS, from the perspective of server system administration. The Ubuntu operating system’s most recent Long Term Support version, version 16.04 (Xenial Xerus), was released on April 21, 2016.
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