How to try out Thunderbird 60?
Solution 1:
You can just download the newest version here https://www.thunderbird.net/en-US/thunderbird/all/ Unpack it to a folder and click on executable "thunderbird". For me it found my profile automatically and I was able to have a look at the new version.
My old installation is not affected in anyway.
Solution 2:
Also, if you want your launcher to launch thunderbird 60 instead of 52, you will need to change the launcher path from thunderbird %u
to wherever you saved it. In my case I saved it in ~/.local/share/
so my overall path was /home/username/.local/share/thunderbird/thunderbird
sudo nano /usr/share/applications/thunderbird.desktop
Find Exec=thunderbird %u
and change to Exec=/whereyousavedit/thunderbird %u
Then it will work perfectly. I'm assuming I will need to undo this once thunderbird 60 comes out in the repo, but this works for now.
Solution 3:
Thunderbird 60 is now available in the snap store https://snapcraft.io/thunderbird
It's still flagged as edge so you need to issue the following command to install it:
sudo snap install thunderbird --edge