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Guide to upgrade Ubuntu 18.04 / 20.04 to Ubuntu 21.04

In this tutorial, we will learn how to upgrade Ubuntu 18.04 or 20.04 to Ubuntu 21.04. Ubuntu 21.04 aka ?Hirsute Hippo? has released on 22nd April 2021. Ubuntu 21.01 has introduced a number of changes like,

Dark theme by default
Linux 5.11 kernel
Wayland as default session
Private home directory
New desktop icons extension
LibreOffice 7.1
Python 3.9 by default

Though you will not be getting the latest version of GNOME or gtk4, but you can expect them in future releases. Now let’s proceed on the steps involved to upgrade Ubuntu 18.04 / 20.04 to Ubuntu 21.04.