Developer Briefing — March 31, 2020
Mozilla announced adjustments to the Firefox release schedule due to COVID-19, extending Firefox 74 support, delaying new features, and prioritizing security updates to reduce disruption for enterprises.
Executive briefing: On , Mozilla detailed changes to the Firefox release cadence to minimize operational risk during the pandemic. Firefox 75 moved to April 7 with a focus on stability, and new features were deferred while security updates continued.
Why it matters: Web and application teams relying on Firefox Extended Support Release (ESR) and mainstream channels needed to align testing timelines and update plans with the modified schedule.
- Testing timelines: Adjust QA windows for Firefox 75 and ESR to match revised dates; prioritize regression tests around security fixes.
- Extension compatibility: Validate critical extensions against the delayed release to ensure enterprise functionality remains stable.
- Change communication: Inform stakeholders that feature changes are paused, but security updates will continue to ship on schedule.
- Monitoring: Track Mozilla release notes for further pandemic-driven schedule changes.
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