The banking sector is always looking for ways where they can cut cost, enhance profitability and just ride any innovation that can ensure that banks survive into the future. I am predicting that banks will be adopting to what they feel to be legitimate and viable technologies around. 

Now, does it mean they gonna adopt the cryptocurrency movement? Probably yes, but not quite aligned with the way we think they will. What I mean is that banks can also introduce their own cryptocurrency if they want and I think there is now a consortium of banks experimenting with this...all of these developments are of course pointing to the cashless society which is now partly happening.