How to install KDE Plasma 5.11 on Ubuntu 16.04 (Kubuntu 16.04)?

Question

How to install KDE Plasma 5.11 on Ubuntu 16.04 (Kubuntu 16.04)?

It seems to be not possible to be done simply from repositories like highlighted in this question: How to force only newer KDE packages to be installed?

Solution

1. Add Kubuntu Backports repo:

   sudo add-apt-repository ppa:kubuntu-ppa/backports
   

2. Get key for Neon package archive:

   wget -q -O - http://archive.neon.kde.org/public.key | sudo apt-key add -
   

3. Add repo:

   sudo /usr/bin/add-apt-repository -y -u 'deb http://archive.neon.kde.org/release xenial main'
   

4. Install new packages:

   sudo apt update && sudo apt dist-upgrade
   

   4a. You might encounter this problem so follow the workaround provided in the article.

Solution inspired by this thread.

Comments

[Admin]

I guess you have tested this and it works. Could you mark this as definitive? Any ideas on Plasma 5.12?