iPhone 6 and 6 Plus users will soon be able to use Siri to access credit cards stored in the Passbook app, if the beta version of iOS 8.1 is any indicator. We’ve already seen the Apple Pay privacy statement and other asssets pointing to this release being the one that enables the payment system next month, but now there’s even more proof.
Starting with version 8.1, if you ask Siri to show a credit card, the phone will bring up Passbook. Currently the app lacks the ability to add credit cards, but Apple has previously confirmed that this will be the application to manage Apple Pay cards. iOS 8.0 included an updated icon with a credit card glyph despite the fact that the functionality was not yet available.
Apple is currently developing iOS 8.2 and 8.3 alongside version 8.1.
Thanks for the tip, @Lakewoodr.