New Digital Currency Introduced? Which coin are you referring to?
Maybe he is saying the New Digital Currency that the BRICS might be creating after stopping themselves from using USD in their transactions, but this will happen many, many years from now, or it might not happen at all.
If btc happens not to be part of that agenda, so will investing into btc against 2024 a wise decision?
I will just focus on this one since, I don't what you are pertaining for OP.
If you look on the price history of Bitcoin, the price of it pumps a few months just after the Bitcoin Halving, so I guess investing in Bitcoin in 2024 might be a wise decision, but there are still risks into it. As for me who believes in 4-year cycle, investing not only next year, but also this year is still a good decision.
However, don't go all in just because many people say that it's a good or wise decision to invest in Bitcoin in 2024.