I have not seen an official announcement of any bank developing they own cryptocurrency, and to say they stands against crypto have always been a negative side I will not expect any new development of bank creating their own cryptocurrency because the nature of cryptocurrency is decentralized and at that the bank will not be able to control the affairs of such coin even if they own it as long as it operate on the blockchain.
I have read a few number of articles about some bank accept cryptocurrency to deposit in their account. i dont know its true or not. for around me there is no use of cryptocurrency freely backup by bank. I think it takes a long time to reach that condition