Therefore the actual answer to the question can I smoothly upgrade from one LTS to next LTS release, in particular when applied to 14- 1upgrade as suggested in the OP, is clearly not yes and most if not all are wrong in this regard. LTS or Long Term Support releases are published every two years in April. That means you ll always have the latest and greatest applications that the open source world has to offer. Mar 1 20LTS is an abbreviation for Long Term Support. The current LTS version is Ubuntu 1LTS (code name Lucid Lynx which was released during April 2010.
LTS stands for long-term support which means five years, until April 202 of free security and maintenance updates, guaranteed. Releases of Ubuntu get a development codename (Breezy Badger) and are versioned by the year and month of delivery - for example Ubuntu 1was released in October 2017. A new Long Term Support (LTS) version is usually released every two years.
Ubuntu LTS (Xenial Xerus) CD images for Ubuntu LTS (Xenial Xerus) 64-bit PC (AMD64) server install image.