According to an article on Infobae.com dated 26 December 2023, the new president, Javier Milei, confirmed that the Banco Central de la República Argentina is preparing 20,000- and 50,000-peso notes due to high inflation. At present exchange ranges, these notes would be worth approximately US$25 and US$60, respectively. They are expected to be introduced in June 2024.
Courtesy of Jorge Aloy.