One of the standout features in the latest update of Firefox is the integrated capability to organize and save tab groups. Previously, users relied on external extensions like Simple Tab Groups or Panorama View for this function.
With the latest release, Firefox has introduced native tab grouping, aligning itself with Chromium-based browsers. The Firefox address bar has also seen significant improvements, particularly in its search functions.
The development team has patched various security vulnerabilities, enhancing the overall safety for users. Notably, Firefox ESR and the Tor Browser have received vital security updates as well.
Mozilla is set to roll out Firefox 138 on April 29, 2025. Firefox 137 introduces the ability to assign names and colors to tab groups, allowing users to close groups of tabs and reopen them later.
Both vertical tabs and tab groups were highly requested features, especially since they have been available in other browsers like Chrome and Vivaldi for some time. Additionally, the address bar has undergone a redesign.
A standardized search button now makes it easier to switch between different search engines and modes. Firefox can detect whether a user is on a page with a search function and offers to utilize it, integrating it seamlessly into the browser experience.
The address bar can also function as a calculator, similar to how the Google search bar operates. It’s important to note that not all new features will be available to every user instantly; some will be gradually rolled out over the weeks ahead.
Mozilla has assigned a high-risk rating to one of the vulnerabilities identified by external researchers. Furthermore, two internally discovered vulnerabilities have been summarized, also with high-risk ratings.
These vulnerabilities could potentially lead to serious memory errors that may be exploited to execute arbitrary code. On the other hand, Mozilla has updated Firefox ESR 128 and ESR 115 to address vulnerabilities, patching at least three in Firefox ESR 128.
The updated Tor Browser 14.0.9 is based on Firefox ESR 128.9.0, further emphasizing that the Tor project is committed to supporting older operating systems until September.