Mozilla Sets Firefox Desktop And Android For Two-Week Releases
The Register reported that Mozilla plans to move Firefox Desktop and Android from a four-week release cadence to a two-week experiment in September 2026, while ESR releases remain annual and Firefox 153 is due on July 21.
The Register reported that Firefox Desktop and Android are set for a two-week release experiment in September 2026 after years of four-week release timing.
Mozilla's plan keeps extended-support releases on an annual schedule.
The change brings release timing, browser features and extension permissions back onto the Firefox roadmap before the next ESR version arrives.
Mozilla director of engineering Sylvestre Ledru told the dev-platform mailing list that work not ready for a release should still wait rather than ship faster for its own sake.
Firefox 155 Moves To September 1
Mozilla's release calendar now places Firefox 155 on September 1, 2026; the earlier plan had listed September 15.
Ledru described the cadence shift as an experiment and wrote that Mozilla would monitor the change in practice.
The release calendar lists later Firefox entries at roughly two-week intervals after the September 2026 change.
Firefox 153 Adds PDF And Certificate Changes
Firefox 153 is scheduled for Tuesday, July 21, the article reported.
Its release notes were blank at the time of writing, but the beta notes listed several user-facing changes.
The beta notes say Firefox 153 can merge multiple PDF documents through drag and drop in the PDF sidebar.
Those notes also list image insertion into PDFs as new pages and improved text highlighting.
Mozilla's next version can generate QR codes for sharing web pages offline, including in printed documents.
The beta notes also list support for verifying and displaying Qualified Website Authentication Certificates, or QWACs, under the European Union's eIDAS framework.
Extensions Lose Local-File Access By Default
Firefox extensions will lose local-file access by default in version 153, the article reported.
Users will still be able to grant that permission separately.
The default change narrows file access for add-ons unless a user approves it.
A tab using location data will show a map-pin icon in the address bar.
The beta notes say Firefox 153 also extends address-bar commands beyond the earlier sound-muting keywords, adding typed commands for picking colours from pages and accessing experimental Labs features.
The beta list includes experimental JPEG XL support.
Pop-up video player controls are also listed for improvement, though Mozilla's final release notes for Firefox 153 were not yet published when the article was written.
Final Firefox 153 notes, experiment results and any permanent schedule decision beyond the September 2026 test remain outside the public record.
