Firefox 64-bit - version 77.0 is released
2020-06-01   link

Thunderbird 64-bit - version 68.8.1 is released
2020-05-22   link

Firefox 64-bit - version 76.0.1 is released
2020-05-08   link

Thunderbird 64-bit - version 68.8.0 is released
2020-05-05   link

Firefox 64-bit - version 76.0 is released
2020-05-04   link