An image showing what Chinese case vendor X-Doria claims to be fourth-generation iPod touch and sixth-generation iPod nano cases has appeared online. The image shows two iPod touch 4G cases with openings in the rear clear plastic for a camera and either a flash or microphone. Notably, the shape of the cases suggests the touch will retain its curved rear shell design instead of moving to a flat back panel as seen on the iPhone 4. The two supposed iPod nano 6G cases, on the other hand, appear to be made for a squarish device based on the 1.7-inch Apple-branded touchscreen seen in photos earlier this year, without any room for a front-mounted Home button. The nano 6G case features an open strip on the rear—perhaps for a camera or built-in clip—as well as what appear to be volume buttons and a larger button on the top side while a Dock Connector and headphone port are along the bottom. Text accompanying the image notes that it is unclear what a move to this small a form factor might mean for the future of the iPod shuffle, though the “nano 6G” device is more like a screened iPod shuffle than the nano, Dock Connector aside.