Thunderbird 64-bit - version 68.1.0 is released
2019-09-11   link

Firefox 64-bit - version 69.0 is released
2019-09-02   link

Thunderbird 64-bit - version 68.0 is released
2019-08-27   link

Firefox 64-bit - version 68.0.2 is released
2019-08-14   link

Firefox 64-bit - version 68.0.1 is released
2019-07-18   link

Thunderbird 64-bit - version 60.8.0 is released
2019-07-09   link