Requiescat in pace. May MariaDB 5.5 rest in peace!
As the maintenance policy of the MariaDB Foundation states, we are committed to maintaining each release for 5 years. MariaDB 5.5 was announced for General Availability on 11 April 2012, so EOL was originally on 11 April 2017. At that point, we extended it by three years, due to its widespread usage in distributions.
Today, we have 11 April 2020, so this is no accidental, sudden death. Everyone could see it coming.
However, we have decided to build one final release MariaDB 5.5.68, with remaining security updates.