Google has been pretty quiet recently about Google Wallet, a new payment service announced back at the end of May. But that is about to change soon, folks. Engadget has received an image taken from a Radio Shack computer indicating that Google and Radio Shack are prepping for an upcoming launch in stores. Usually in large retail rollouts like this, retailers send out info before it's about to go public. According to the image taken, the service is set to go live sometime in September. If Radio Shack is already receiving info about the launch, maybe we'll see some other info from more retailers soon. Stay tuned and ready those NFC-enabled devices.