Mozilla speeds Firefox release schedule to biweekly

Firefox releases will soon get even closer together – but not ESR ones, which remain annual, with the next one due out soon. The change was announced last week on the dev-platform@mozilla.org mailing list by Mozilla’s director of engineering Sylvestre Ledru: “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… This does not mean that all work needs to ship twice as fast.