When you purchase through links in our articles, we may earn a small commission. Mozilla's latest Firefox update fixes 10 high-risk security flaws and rolls out small but useful features, from Switch Pro controller support to sortable tabs. The newest major release of Firefox 155 for Windows, macOS, Linux, and Android brings a number of improvements, including support for Nintendo Switch Pro controllers and sortable tab groups. Mozilla has also patched over 30 security vulnerabilities, and updates are also available for the ESR versions of Firefox for older systems. The release of the next major version, Firefox 156, is already scheduled for September 15th, with time for a bug-fix update on September 8th.