Maybe banks want to make their own cryptocurrencies? It seems to me that these issues are very important and banks are likely to influence the crypto market trying to take possession of all crypto assets.
The fact that the initiative comes from the Central Bank already tells us that it won't be a cryptocurrency, it won't be blockchain-based, won't be mined, and will most likely be fixed to assets. It looks to me more like an attempt to take control over the situation. The banks probably see the advantages of the crypto and feel threatened, so they came up with a supposed substitution, which, they hope, people will buy.
So yes, they will form their own digital currencies but not cryptocurrencies. Remember they are banks, so this will still be centralized.