The National Bank of Argentina is issuing the new Flora and Fauna-series. The 200- and 500-pesos notes have already been issued but next year the notes of 20-, 50-, 100- and a new denomination of 1,000-pesos will be introduced.
The website Dia a Dia has pictures of the front of the new notes showing the local animals that will replace the currently pictured heroes. The back of the notes will show the region the animals live in. I'm pretty sure the colors are a bit too saturated in these pictures and the final design will be toned down a few notches.