New:
The display language for the Firefox application UI is now changeable in the Options page
Added support for the WebP image format
Firefox on Windows can now be installed using an MSI installer
Firefox now supports Handoff on macOS to continue browsing from your iOS device to your Mac
On Linux, tabs can be switched by scrolling in the tab bar Changed:
Updated the Content Blocking section in the Privacy & Security Options page and in the Control Center to simplify blocking options for users
Enhanced security for Linux, Android, and macOS users via stronger stack smashing protection being enabled by default
Firefox can now be set to warn when exiting, even when configured to automatically restore the session on the next launch
Memory usage is also now reported for each resource visible in the updated Task Manager page found at about:performance Developer:
Added a new Flexbox inspector tool to detect and highlight Flexbox containers and debug Flex items' sizes
All CSS changes made in the Rules panel are now tracked in the new Changes tab
Added support for the Storage Access API on desktop platforms
