The Firefox Release Schedule overview offers information about past, present and future releases of the Mozilla Firefox web browser.
With four different versions of the Firefox web browser available at any time, 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.
To make matters even more complicated, some versions like the aurora or nightly versions get updated fairly often. To bring order into chaos, release schedules usually only concentrate on version increases and not all the updates that get released.
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.
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: Mozilla announced the move to a variable Firefox release schedule recently.
Sören Hentzschel today released his own Firefox and Thunderbird release calendar which includes not only both the Mozilla Firefox web browser and Mozilla Thunderbird email client, but also Beta, Aurora and ESR versions of Firefox. The table currently covers all upcoming releases for the year, and even provides an outlook of the first releases of next year.
Our Firefox release schedule lists all Firefox versions, meaning Firefox Stable, Beta, Developer Edition (Aurora), Nightly, and ESR, the version they are updated to, and the date this is going to happen.
It won't reference minor version updates as those are not scheduled usually but pushed out when it is required.
This is the list of past releases for Firefox. While it is not recommended to run any of those versions anymore, it may be used for reference.
The release schedule for Firefox and Thunderbird is regularly updated by us so that you will always know when future versions and editions of Firefox are released by Mozilla.
Since Mozilla moved from a 42 release cycle to a flexible scheme, it becomes even more important to keep an eye on these releases.
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