More and more articles indicates that Apple will do a NFC launch or maybe a statement at the version 6 launch event on September 9.
Macrumors article here
And the NFC antenna could be hidden under the TouchID sensor, see how here
Comment. If Apple have succed in getting agreements with Visa, Mastercard and American Express and with same (or lower) fees and with no liability shift for merchants…then this is what is needed to see real customer adoption of mobile payments.