Scheduled to become available for download/update later today, Firefox 79 comes roughly one month after the release of Firefox 78. This light release includes just a few changes and the most obvious one is Enhanced Tracking Protection 2.0. The Android version is also expected to get an update today, but there are no details available yet.
https://www.notebookcheck.net/Firefox-79-rolls-out-with-Enhanced-Tracking-Protection-2-0-and-more.483267.0.html