I did not get the update through checking for updates, but it is on the FTP server for Thunderbird:
253080
Directory Listing: /pub/thunderbird/releases/68.2.1/
:-)
Thunderbird — Release Notes (60.7.1) — Mozilla
Thunderbird Release Notes
Version 60.7.1, first offered to channel users on June 13, 2019
Check out "What’s New" and "Known Issues" for this version of Thunderbird below. As always, you’re...