Firefox Could Move to a Two-Week Release Cycle in September 2026

Firefox could move to a two-week release cycle as Mozilla considers delivering browser updates more frequently.

Mozilla currently releases major Firefox Desktop and Android updates every four weeks. Under the experimental schedule, new versions would arrive every two weeks starting in September 2026.

Firefox 155 could arrive earlier

Firefox 155 now has a target release date of September 1, 2026. Mozilla previously planned to release the browser update on September 15.

The change would bring Firefox closer to competing with other browsers. Google previously announced plans to move Chrome to a two-week release cycle, while Microsoft confirmed a similar schedule for Edge last month.

Mozilla has not presented the Firefox schedule change as permanent. The company currently describes it as an experiment that could change based on feedback and release performance.

Mozilla wants features to reach users faster

Mozilla says the shorter cycle would allow completed features, fixes, and improvements to reach Firefox users more quickly.

The company also expects the schedule to make releases more predictable. Developers could move completed work into the next available update without waiting four weeks.

A two-week cadence could reduce pressure to include unfinished features in an upcoming release. Teams would know that another release opportunity would arrive shortly.

Firefox quality will remain the priority

Mozilla says developers will not need to complete features twice as quickly.

Features that require more development or testing will remain in progress until they meet Firefox’s quality standards. Larger changes will still receive enough time for testing, refinement, and bug fixes.

The company says release speed will not take priority over browser stability and quality.

Mozilla has also recently resolved issues related to MP4 playback, along with several other media playback problems in Firefox, improving overall reliability and user experience when streaming or viewing video content.

Via Neowin