It looks like Apple's suppliers and manufacturers in Taiwan in China are finally catching up with demand. First we learned that Foxconn is finally ramping up iPhone 5s production, with handset ship times being lowered earlier this week to three to five days for online orders. And now, despite the initial rumors of shortages concerning the new iPad mini with Retina display it would appear that production bottlenecks are easing quickly, with the Cupertino company reportedly having ordered a total of nearly four million Retina iPad minis in the month of November… DigiTimes is reporting that Apple's Taiwan-based supply chain makers are now able to build more Retina iPad minis compared to the first-generation, non-Retina models. Shortages of Retina displays were the main reason causing the iPad mini to suffer from tight supply since manufacturing a 7-inch Retina display is more difficult than a 9.7-inch one, the sources explained.