Well, Bitcoin itself is not that interesting for banks. Bitcoin is actually only an addon built upon the blockchain which could be easily replaced by an own crypto coin (if they use a custom blockchain). Banks are more interested in improving and securing stock trading which could be achieved by using blockchain technology.
Blockchain, blockchain, blockchain, they all steer away from bitcoin and talk about the blockchain as the interesting part of bitcoin this is a pattern over the last few weeks with the banks, sweeping bitcoin to the side and focusing on the blockchain.
Still good to see it is being talked about and there is some focus.