We've heard that the next iteration of the iPad will be thinner, have a Retina Display, and will bring peace to the Middle East. Here's a rumor that's a little more mundane, and much more likely to be accurate though -- Apple may be adding another manufacturer, alongside Foxconn, to produce its tablet. According to a DigiTimes source the explosion at the company's Chengdu plant in May has created some serious supply issues. Additionally, tablet sales are expected to grow even higher this year, according to the IDC, and the Cupertino Crew already has trouble keeping up with demand. It seems