New functionality take time to plan, work out the operational and regulatory side of it, test it out and obtain feedback, before deploying it from production servers to the live environment.
It does not appear out of nowhere, it is not something that can be easily bought off-the-shelf, and it is not something that can be summoned by magicians practising the arcane.
New currencies are not added to the product by appending the currency suffix to the end of numbers in a text file, but by working alongside national financial regulators and national central banks to ensure that the product and the currency implementation complies with the various financial regulations in place.
Revolut was the first of the mobile-first fintech challenger banks to have insurance. Now N26 has it, but only recently. Revolut was the first to have multiple currency accounts. Now TransferWise has it, but only recently. Revolut will be the first in the industry to have support for cryptocurrency wallets (Rather than Fidelity’s option of just displaying the value.). Other challenger banks and legacy banks may follow, but Revolut would have pioneered it.
Features take time to come, especially ones as big as Apple Pay (Apple is quite tight on compliance with their specifications. If you look at Apple’s MFi programme, and the requirements for getting HomeKit certification… it is clear that Apple is a stickler for detail, and that they will not roll out a third-party integration until every single part of their certification process is completed.).
Apple Pay has been a confirmed feature. It will come.