A rear shell purportedly from the second-generation iPad has been spotted at the 2011 International CES within the iLounge Pavilion. The shell, which has been marked by developer Gopod Mobile with “iPad 2” and “128GB” logos that would not appear on the actual device, is being shown paired with an iPad 2-specific foldable rechargeable battery pack developed by the company, and depicts the revised device’s redesigned curves,…