A state-owned bank in Brazil is about to issue a crypto token designed to maintain parity with the national currency. the Brazilian National Social Development Bank will launch a pilot in January 2019 for the BNDES token, which runs on the ethereum blockchain.
I do not think that it affects Etherum at all, they are simply adopting what is the most common form of token and launching as an ERC-20. Most projects start this way then will migrate to their own blockchain once developed.