Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 Should we plan for a new release around March 2019, if only a point release? Otherwise, a lot of Japanese text will stop working, due to the expected abdication of Emperor Akihito in April 2019, and the use of a new character in Japanese-format dates. This differs from ordinary Unicode updates, since the new character is li