
Firefox 109 Beta 110, Nightly 111, Firefox ESR 102.7.Firefox 108 Beta 109, Nightly 110, Firefox ESR 102.6.Firefox 107 Beta 108, Nightly 109, Firefox ESR 102.5.

#Firefox esr 24.5 update
Update (2016): Mozilla announced the move to a variable Firefox release schedule recently. Update 2 (2019): Firefox will be released every four weeks from 2020 onward. While you can try to calculate the releases after the next by adding 42 days to a fixed release date, actual release dates may fluctuate especially for the beta and aurora version increases. (Update: That changed with the introduction of the Rapid Release Calendar) Mozilla's official Release Schedule page lists only the next version upgrade for Firefox stable, beta, aurora and nightly, but does not go beyond that.

To bring order into chaos, release schedules usually only concentrate on version increases and not all the updates that get released. To make matters even more complicated, some versions like the nightly versions get updated fairly often. With three different versions of the Firefox web browser available at any time (Stable, Beta, Nightly), plus special builds that pop up every now and then and ESR versions, it is quite difficult to keep up with the browser's rapid release schedule.
