Is the card I already have still valid? Do I need to destroy the old card now? Do I have to return the card I already have in exchange for the Debit Mastercard?

The card will be replaced regardless of your previous debit card's validity date. All Maestro debit cards will now be replaced by a Debit Mastercard to ensure that all customers get the new card as quickly as possible. Please destroy the old card right away and use the new one.