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Houschka Rounded is released this week.
It is very comprehensive with multi-lingual coverage, featuring a standard character set, contextual and stylistic alternates, lining and old-style numbers, both proportional and tabular, small caps, and 3 extra stylistic sets (as shown on the pdf).
Houschka Rounded has six weights ranging from a very thin Thin to Extra Bold.
The Thin style may be the thinnest rounded (terminals) font ever! Magnify the 5-spread pdf and have a look.