Reports earlier this morning tipped that Google's NFC-based mobile payment service called "Wallet" would be launching first on the nation's third largest carrier sometime today. And indeed, Google has confirmed now that the Wallet app will begin rolling out to Nexus S 4G handsets via an over-the-air update.
Google Wallet lets you pay for any of your purchases at participating locations by simply tapping your Nexus S 4G on a NFC-equipped terminal at the register. Payments work with your Citi MasterCard credit card or Google's PrePaid card, which can be funded by any credit card, including those from Visa, American Express, and Discover.
The Google Wallet service was first announced back in May with initial launch partners being Citi, MasterCard, First Data, and the Now Network carrier. Visa, Discover, and American Express will also be joining the platform soon with support for their NFC specs to be added in future versions of Google Wallet.
For more details on Google Wallet, make sure to visit the official page here.