Google announced plans some time ago to move Chromium to a 2-week release cycle to bring features quicker to users. While that does not mean that there will be more Chrome releases, it means that the main version of the browser increases twice as fast.
Mozilla announced on the official Dev Platform group that it will move Firefox development to a 2-week release cycle as well. However, Mozilla notes that this will be an experimental shift, one that it plans to monitor closely to find out if it is beneficial.
Starting with Firefox 155, which Mozilla plans to release on September 1, 2026 and not on September 15, 2026 anymore, Firefox will see a version bump every two weeks.
We are planning to move Firefox Desktop and Android from a 4-week release cadence to a 2-week release cadence starting in September 2026.
This will be an experiment. The goal is to give work that is ready to ship more frequent opportunities to reach users, while making the release process more predictable and reducing pressure on uplifts.
This does not mean that all work needs to ship twice as fast. Work that is not ready should not be rushed, and features can still take the time they need to bake.
Mozilla says that features shouldn’t and won’t get rushed when the change hits. If a feature is not ready, it should not be included in a release just like before.
For users, the main change is that Mozilla may bring some features earlier to Firefox users and that the version of the browser increases twice as fast. Firefox ESR users won’t see a change, as that version is not affected by the change.
we like when number go up