- This release is based on the new version 4.1 of the Fira Sans fonts. Fira Sans now contains over 2670 glyphs per style.
- New weights UltraLight, Thin and Heavy are included in addition to the existing Light, Regular, Medium and Bold weights. All upright styles from the Neue Helvetica system fonts are now replaced.
- The existing styles have been slightly tweaked to better match the weights of Neue Helvetica.
- The build process is now completely Glyphs-based. Thanks to Ralph for letting me use his Glyphs source files (not included in the public release).
- The installer now removes any previously installed versions of the Fira System Fonts.
Download fira-system-fonts-installer.zip for an easy-to-use installer that will install the font into the correct folder and set the correct permissions automatically.