Galaxy Nexus and Nexus S on AT&T finding Google Wallet available
There hasn't been any official announcement, but suddenly today the Google Wallet app has started showing up for certain devices on a specific carrier, and amazingly enough, the carrier is one of the major backers of the ISIS NFC payment system.
That carrier is of course AT&T and the devices are the Galaxy Nexus and Nexus S. Google Wallet had come up as unavailable for users before, but now AT&T customers with those devices can get the app. It was tested by both Droid Life and Engadget, and Engadget even found that if you swap an AT&T SIM into a GSM Galaxy Nexus, you can download the Wallet app, and it will still work even after swapping back to a T-Mobile SIM card.
Of course, even if you do now have access to the Google Wallet app, you still need to also have a Citi Mastercard (the only card that works with the app) and have stores nearby that accept Wallet payments (which isn't so hard with the Mastercard PayPass Locator app.)