The XO Tablet that One Laptop Per Child was shuttling around the floor of the Las Vegas Convention Center at CES back in January wasn't quite the final version of the company's first consumer-facing device. Now, a few weeks out from its official June 1st online availability, OLPC's finally got its hands on the shipping product. It's designed by Vivitar, a price-conscious manufacturer hand-picked by retail partner Walmart, marking t
