My theory: We’re getting Apple Pay soon from bunq. That may also be one of the reasons for the new premium model with MasterCards.
The new bunq app looks a lot like the iOS 11 style App Store, MasterCards are not as useful in the Netherlands next to our bank cards, except of course for online payments, but a MasterCard is required for ApplePay. If bunq will be the first bank in the Netherlands to offer ApplePay included in the premium package, it’s so worth the 7,99 per month. Especially since Apple charges per transaction.