Mozilla Shifts Firefox to 2-Week Releases From Sept. 1 With Version 155
Updated
Updated · Ghacks · Jul 14
Mozilla Shifts Firefox to 2-Week Releases From Sept. 1 With Version 155
3 articles · Updated · Ghacks · Jul 14
Summary
Firefox 155 will launch on Sept. 1 as Mozilla starts a two-week stable release cycle for desktop and Android, replacing the current monthly cadence after Firefox 154 ships on Aug. 18.
Mozilla says the faster schedule should deliver updates more often and make rollouts more predictable, while keeping feature development timelines unchanged and holding back unfinished work.
The company is treating the shift as an experiment and may adjust if quality, workload or user-experience problems emerge during the transition.
Extension developers may need tighter testing around more frequent API and behavior changes, while enterprises can stay on Firefox ESR for a slower, stability-focused update track.
The move brings Firefox in line with Chrome and Edge's two-week cadence, though early user reaction has been mixed over reliability risks and Mozilla's resources.