https://www.mozilla.org/en-US/firefox/74.0.1/releasenotes/
Security Vulnerabilities fixed in Firefox 74.0.1 and Firefox ESR 68.6.1 - Mozilla Foundation Security Advisory 2020-11
4/5 追記
Android 版 Firefox 68.7.0
https://www.mozilla.org/en-US/firefox/android/68.7.0/releasenotes/
4/8 追記
Version 68.7.0, first offered to Release channel users on April 7, 2020
https://www.mozilla.org/en-US/firefox/android/68.7.0/releasenotes/
Various stability and security fixes
Firefox ESR 68.7 Android 版のフライング配布だったのね
関連
https://noushibou.hatenadiary.jp/entry/2020/04/08/074848
追記終わり