Updated in 2009, Chennai has new weights and OpenType features. Chennai is a simplified sans-serif with a full complement of OpenType alternates. The typeface is rounded, slightly extended and geometric. Over fifty OpenType alternate characters are available, including swashed lower forms, traditional caps and a traditionally formed lowercase. Chennai also includes seven style sets, oldstyle figures, and small caps. Please see the sample PDF to see these in action.
Montag is an extended, rounded sans-serif.
In many ways it can be seen as a more conservative, extended version of Chennai. As with Chennai, it includes simplified versions of many characters for titling or when a more futuristic appearance is called for.
Montag also has a non-rounded companion, Dienstag, also from insigne.