Given the variation in support times, developers and administrators should be able to easily discover the expected lifespan of a release.

I propose we add an expected end-of-life date with releases added to the releases page:

https://mariadb.org/mariadb/all-releases/

It could perhaps look a bit like the table in the "RIP 5.5" blog post:

https://mariadb.org/mariadb-55-rip/