Firefox Release Notes

Firefox now prevents websites from automatically playing sound. You can add individual sites to an exceptions list or turn blocking off. To learn more about block autoplay, which will be rolled out gradually to all users, visit the Mozilla blog.

Improved search experience:

• Find a specific webpage faster when you have a lot of tabs open: You can now search within all of your open tabs from the tab overflow menu
• Easier search via a redesigned new tab in Private Windows

Smoother scrolling: Scroll anchoring keeps content from jumping as images and ads load at the top of the page

Improved performance and better user experience for extensions:

• Extensions now store their settings in a Firefox database, rather than individual JSON files, making every site you visit faster
• A redesigned keyboard shortcuts section in about:addons makes it easier to view and adjust default shortcuts

Redesigned certificate error pages help you better understand and resolve issues, including identification of certificate issuers for anti-virus software

Added basic support for macOS Touch Bar

Experimenting with an improved Pocket experience in New Tab with different layouts and more topical content

Improved performance and reduced crash rates by doubling web content loading processes from 4 to 8

Easier, passwordless security: Added support for Windows Hello on Windows 10, allowing you to use your face, fingerprint, or external security keys for website authentication

Enabled AV1 support on 32-bit Windows and MacOS. Firefox now supports the next-generation, royalty-free video compression technology called AV1. Read about Mozilla’s contribution to this new open standard.

The Dark and Light Firefox themes now override the system setting for title bar accent color on Windows 10

Linux users: Resolved an issue that caused Firefox to freeze when downloading files

Various security fixes

System title bar is hidden by default to match Gnome guideline for Linux users

DevTools Inspector is now fully usable when the Debugger is paused

Lowered priority of setTimeout and setInterval during page load to improve overall page load performance

Fixed: <button> element is no longer special cased in event dispatch, per latest specifications