* 66.0b1 dev ed release on aurora channel 22 Jan 2019
* 66.0b3 Beta release on beta channel: 29 Jan 2019
* Release notes [https://docs.google.com/document/d/1dRxroYdH3jfv3zvOMqDpVXlSz_qZFs1WyzfIEtujAXQ/edit# draft] - [https://www-dev.allizom.org/firefox/66.0beta/releasenotes staging ] - final* Fennec release notes: [https://www-dev.allizom.org/firefox/android/66.0beta/releasenotes/ staging] - final
===66.0 Release===