Thunderbird 64-bit - version 68.4.2 is released
2020-01-24   link

Firefox 64-bit - version 72.0.2 is released
2020-01-20   link

Thunderbird 64-bit - version 68.4.1 is released
2020-01-10   link

Firefox 64-bit - version 72.0.1 is released
2020-01-08   link

Firefox 64-bit - version 72.0 is released
2020-01-06   link

Thunderbird 64-bit - version 68.3.1 is released
2019-12-17   link