This is a grand new release, with over two years of work behind it.
A lot has changed since version 3.x. Thousands of glyphs have been redesigned.
Here are some highlights, compared to the previous version:
- Six additional "Display" designs, assigned to an
opszvariable-font axis, exposed as a second family "Inter Display" as static fonts. - Several new OpenType features
- Humanist-style italics
- Many technical changes (UPM changed to 2048, refined metrics, many improved features, etc)
Compatibility with version 3
Even though the UPM (the font's coordinate system) has changed along with metrics, I've done my best to make sure existing uses of Inter version 3 will look as close to identical as possible for small text sizes, in particular run length.
However you should expect to see noticeable differences when switching to Inter version 4.