Sood managed to unearth the setup screens in the Passbook app and the initial iOS 8.1 setup process.
Apple Pay setup screen in an internal Passbook
Apple Pay portion of initial iOS 8.1 setup (not public yet)
He was also able to unearth the setup screen for the iPad.
Touch ID enabled iPads get the same setup screen but without the part mentioning paying in store (obviously)
For more details on Apple Pay, click here. We'll let you know if any further discoveries are made.