Every time a bank or something else is talking about the blockchain, you can be sure they are working on bitcoin and use the blockchain as a coverop. If they would really be interested in blockchains they would have said so 7 years ago. There is absolutely nothing new about blockchains 7 years later. the blockchain has not changed in any way, and anything financial should have know about it and looked into it about 6 years ago.
What is new is that bitcoin has grown up. If they are interested NOW, you can be sure that they are interested in bitcoin itself, as a currency. They may experiment with there own blockchains and there own alt-coins, saying it will improve the services for there customers (like they ever cared about that), but in the end they will go to the coin where money is to be made.