Firefox Release Notes

On February 8, we expired the 18 colorway themes that shipped along with Firefox 94. This signals the end of a special, limited-time feature set. However, you can hold onto your favorite colorway, as long as you’re using it on the expiration date. In other words, if a colorway is “enabled” in the add-ons manager, that colorway is yours forever.

Beginning February 15, we are releasing 6 brand-new colorways in a special partner collaboration. U.S.-based fans of the film can visit truecolors.firefox.com to activate official Turning Red-inspired Colorways, available exclusively in Firefox for desktop through April 30, 2022. Firefox users who visit the “True Colors” campaign landing page will be able to modify how their web browser looks, with colors and moods inspired by some of the main characters in the film. To enjoy the new Colorways, you’ll need to make sure you upgrade to the latest Firefox 97 version. This collection will be available in the add-ons manager, within the Colorways section. Read more about colorway updates here.

Firefox now supports and displays the new style of scrollbars on Windows 11.

On macOS, we’ve made improvements to system font loading which makes opening and switching to new tabs faster in certain situations.

Various security fixes

Support for directly generating PostScript for printing on Linux has been removed. Printing to PostScript printers still remains a supported option, however.

Various bug fixes and new policies have been implemented in the latest version of Firefox. You can find more information in the Firefox for Enterprise 97 Release Notes.

Users running WebRoot SecureAnywhere Antivirus may experience impaired functionality when upgrading to Firefox 97. Closing WebRoot will allow Firefox to resume normal operation.

With the release of Firefox 97, we are pleased to welcome the developers who contributed their first code change to Firefox in this release, 7 of whom were brand new volunteers! Please join us in thanking each of these diligent and enthusiastic individuals, and take a look at their contributions:

• bnhunsaker: Bug 1707379 - Firefox raises window when it gains focus when using yabai with focus_follows_mouse with autofocus, but not autoraise
• Dennis Jackson: Bug 1742617 - Crash in [@ nsDocShell::MaybeFixBadCertDomainErrorURI]
• Jin Chun: Bug 1704133 - Removing stale probe sw.synthesized_res_count
• Kevin Daudt: Bug 1745560 - Firefox 91.4 fails to build against wayland 1.20
• Meg Viar: Bug 1744466 - Make "More from Mozilla" strings localizable
• Neia Finch:
  • Bug 1613634 - CoalesceMutationEvents causes excessive page render times
  • Bug 1747922 - Replace MathML font variant constants with enum class
• Nick Rishel:
  • Bug 1592731 - Firefox ESR's update failure doorhanger should direct user to the ESR download page
  • Bug 1730110 - Update manual update URL
  • Bug 1746517 - Add query parameter to manual update URL
• Patrick:
  • Bug 1742312 - Remove NPAPI related flags
  • Bug 1743102 - Add color-scheme meta tag to remaining compatible about: pages
• Pier Angelo Vendrame: Bug 1745715 - Bundled fonts should have Base visibility even when they are also system-wide installed
• Rashelle:
  • Bug 1739515 - Clean up preference for supporting multiple PiP windows
  • Bug 1742585 - PIP button z-index not respected with semi-transparent div
  • Bug 1744633 - Remove unnecessary browser_closePipAfterCloseBrowser.js test for Picture-in-Picture