This is about the 'Digital Euro', which seems to be both:
- a central bank digital currency, and
- a system for transferring this currency between people and businesses
https://www.ecb.europa.eu/euro/digital_euro/html/index.en.ht...
It's not clear to me that it replaces Visa/Mastercard. If you have a problem with a vendor and you've paid by card, you have a chargeback as a last resort. Not so with cash or a CBDC.