Mozilla is set to modify its Firefox release schedule, transitioning from a four-week cycle to a biweekly one beginning in September 2026. This decision was communicated by Sylvestre Ledru, Mozilla’s director of engineering, via the dev-platform@mozilla.org mailing list.
According to Ledru, the new schedule will allow for more frequent updates to Firefox Desktop and Android, with the first biweekly release, Firefox 155, anticipated on September 1, 2026, instead of the previously planned September 15. This change is described as an experiment, emphasizing that it does not necessitate accelerating the development of features that are not ready for release.
Upcoming Features in Firefox 153
As the new release schedule approaches, Firefox 153 is set to launch on July 21, 2026. While the release notes are currently sparse, beta notes indicate several enhancements. Notably, users can expect improved PDF editing capabilities, including the ability to merge multiple PDF documents through drag-and-drop functionality and insert images into PDFs as new pages. Additionally, text highlighting in PDFs will see improvements.
Firefox 153 will also introduce a feature for generating QR codes to facilitate offline sharing of web pages, as well as support for the EU’s new Qualified Website Authentication Certificates (QWACs) in compliance with the eIDAS legislation. This aims to enhance web security.
Security and Usability Enhancements
In terms of security, extensions will lose local-file access by default, although users can grant this permission individually. A new map-pin icon will indicate when a tab is utilizing location services. Furthermore, the release will expand the functionality of the address bar, allowing users to mute sound and access experimental features through typed commands.
Firefox 153 will also feature experimental support for JPEG XL images, improved pop-up video player controls, and HDR video playback for compatible Windows systems. On macOS, users will benefit from a new keyboard shortcut (Fn+F) for full-screen mode.
Extended Support Release (ESR) Details
Firefox 153 is significant as it will serve as the next Extended Support Release (ESR), receiving security updates for a minimum of 15 months, extending into late 2027. This version will also form the basis for the latest beta of the AI-free Waterfox fork, which has recently integrated built-in ad blocking capabilities.
This article was produced by NeonPulse.today using human and AI-assisted editorial processes, based on publicly available information. Content may be edited for clarity and style.
