Colorful plastics shells said to be destined for Apple’s upcoming new entry-level iPhone have leaked more than a dozen times now, but the latest leak shows the casing in a high-definition video and compares it to older iPhone models. YouTube user Michael Kukielka on Tuesday posted a high quality video that thoroughly examines the purported new iPhone case in white. Kukielka then compares the shell to an iPhone 5, an iPhone 4S, an iPod touch and a white iPhone 3GS, which is perhaps the most interesting comparison of the bunch since it and its predecessor, the iPhone 3G, are the only plastic iPhone models ever to have launched at this point. Apple is expected to release its new entry-level iPhone this fall alongside the iPhone 5S. Kukielka’s full video follows below.