We have a new article on SUMO with a quick overview of the different release channels and links to further information on each. I'd like to get a link added to the downloads page pointing to this article.

https://support.mozilla.org/kb/choosing-thunderbird-release-channel

Proposing to add a "Read more" link at the end of the text in the warning notices for each release channel.

Alternatively it can be added below under the "More Information" section.