Unlikely though it may be, a new report claims that Apple’s upcoming iPhone 5S will be a bigger upgrade than most are expecting when it launches this fall. Chinese gadget blog WeiPhone on Tuesday reported that Apple’s next-generation iPhone will sport a tweaked design with a narrower bezel around the display. And despite the fact that the iPhone 5’s Retina display is still among the best in the business, the site claims the iPhone 5S (or iPhone 6, as the site says it could be called) will include a new Retina display that packs twice as many pixels into a panel that is the same size as the current model’s display. BGR previously revealed that a number of internal components have been redesigned for the next-generation iPhone, but a significant external redesign is not expected. WeiPhone, which has reported accurate details about unannounced Apple products in the past but has also issued some reports that didn’t pan out, says the next iPhone will debut in September.