AndroidandMe, who first spotted the page, also notes that the phone’s specs appear to indicate support for AT&T, Verizon and Sprint’s 3G networks. Currently, the device is only available via Google’s online store, with a subsidy if you buy the phone along with a T-Mobile service contract.
Regardless of whether or not the device ends up in Walmart’s stores or just on its website, the move would represent a big shift in Google’s sales strategy, a major piece of which involved removing the middleman. With initial sales estimates coming in at a paltry 20,000 devices in the first week, perhaps this is a sign that Google’s reconsidering how to best get the device into consumers' hands.
We’re trying to dig up more information on this story and will update if we learn more.