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That document only covers Apply Pay in apps, for physical and "in-app" purchases. It doesn't cover payment in physical locations.
They were clear during the keynote that the payment uses standard NFC equipment and that the transaction actually happens between the banks and Apple.
Soul-
Aha, I've only been reading the documentation they've published.
In which case it still takes time to roll-out as most of the equipment in retailers is leased from, and belongs to, the merchant/payment provider. Meaning that if Apple are pushing those guys out, then Apple still needs to provide their own hardware and integration with EPOS as the equipment isn't usually owned by the shops (until you get to the big boys, but then they need to rewrite their EPOS to know about Apple).
Velocio
No.
https://developer.apple.com/apple-pay/Getting-Started-with-Apple-Pay.pdf
Apple Pay uses a different system based on using tokens as an abstract but trusted representation of the payment method... rather than the payment method itself.
It's a difficult thing to explain, but it's actually more secure as the tokens can be verified and are usually single-use only (the requestee/retailer has to declare the type of token they want).
Anyhow... different system, it's may be compatible with the readers deployed today... but it isn't compatible with the software infrastructure deployed against those readers today.