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Moving Firefox to a faster 4-week release cycle

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Moz/FF

We typically ship a major Firefox browser (Desktop and Android) release every 6 to 8 weeks. Building and releasing a browser is complicated and involves many players. To optimize the process, and make it more reliable for all users, over the years we’ve developed a phased release strategy that includes ‘pre-release’ channels: Firefox Nightly, Beta, and Developer Edition. With this approach, we can test and stabilize new features before delivering them to the majority of Firefox users via general release.

And today we’re excited to announce that we’re moving to a four-week release cycle! We’re adjusting our cadence to increase our agility, and bring you new features more quickly. In recent quarters, we’ve had many requests to take features to market sooner. Feature teams are increasingly working in sprints that align better with shorter release cycles. Considering these factors, it is time we changed our release cadence.

Starting Q1 2020, we plan to ship a major Firefox release every 4 weeks. Firefox ESR release cadence (Extended Support Release for the enterprise) will remain the same. In the years to come, we anticipate a major ESR release every 12 months with 3 months support overlap between new ESR and end-of-life of previous ESR. The next two major ESR releases will be ~June 2020 and ~June 2021.

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Firefox is Switching to a Monthly Release Cycle

  • Firefox is Switching to a Monthly Release Cycle

    Getting a new version of Firefox every 4 weeks isn’t too dissimilar to the current Firefox release cycle, which see a new major release issued every 6 to 8 weeks.

    But by increasing the release rate Mozilla says it can “increase its agility” and bring users “new features more quickly”.

    “With four-week cycles, we can be more agile and ship features faster, while applying the same rigor and due diligence needed for a high-quality and stable release. Also, we put new features and implementation of new Web APIs into the hands of developers more quickly,” Mozilla say.

Mozilla Shifting Firefox To A Four-Week Release Cycle

  • Mozilla Shifting Firefox To A Four-Week Release Cycle

    Mozilla announced today they are tightening up the Firefox release cycle even more... Expect to see new Firefox releases monthly.

    Currently Firefox has a 6~8 week release cadence, not too different from Google Chrome. But Mozilla has now come up with an ambitious four-week release cycle.

    Mozilla is moving Firefox to a four-week release cycle to increase its agility and deliver new features faster. This four-week release cadence will begin in Q1'2020.

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