Already is going to be used by all over the world. Now itself bitcoin is used by many people across the world and in future there will at least 80% of the population who will prefer bitcoin over traditional currency because it had much more advantage they traditional currency.
Yes, bitcoin was already part of future money, the acceptance of bitcoins worlwide was really happening. In some country, bitcoins are already accepted in some merchants, this only proves that many people are now recognizing bitcoins as a money, as an alternative way of payment aside from the traditional paper money or currency. Bitcoins will definitely a future money.