Yes, adopting the blockchain system is a great sign of the banks ready to transact in bitcoins. Months ago, the banks maybe didn't know about the bitcoin and they however rejected it because of the lack of knowledge about it. But now, they are doing so.
Adapting blockchain technology and getting involved in bitcoin is totally different story.
Banks won't accept bitcoins nor sell you bitcoins in the near future.
What I can imagine that banks can help people in connection with bitcoin is:
1. Safe boxes to store your seed (written on a piece of paper) safely
2. Later on, a secure and digital storage where you can hold your private key safely
Average Joes would be happy to store their private key at banks' because they're not confident enought that they can store their private key safely at home...
But I just can't imagine yet that banks will be directly involved in bitcoin in the near future.