The summit has approved Brazil’s proposal for studies to be conducted on a new shared currency for intra-payments too!
Important to notice this is all very early stages though. Brazil’s hopes are for the studies to be made until 2025 (when it will hold Brics presidency) and if proven successful, the currency would be agreed with and announced during the 2025 summit in Brazil.
A common misconception is thinking that the currency would be a new Euro or something that would substitute national currencies when it would be designed for trade only, for all BRICS countries.
Then why not just use local currencies or use Yuan? The "BRICS currency" is reminiscent to me of occasional proposals to create an "Islamic Gold Dinar" or something similar for trade among Muslim countries: these are often announced with great fanfare but never seem to go anywhere.