Hi. I'm an argentinian living in Argentina. This announcement is vaporware from the two socialists, leftists governments of Argentina and Brazil to distract the public. Noboby here in Argentina expects anything to come out of it, since 2023 is election year and we came out of 2022 with 100% inflation (another 100% inflation projected for this year). So, no. This is not happening.

Edit: More context. Just yeserday a new 2000 Peso bank note was announced. It will be the highest available this year. It's worth 5 USD.