As we inch closer to the late 2011 iPhone 5 introduction, more parts purported to belong to a fifth-generation iPhone find their way onto the web at large. MacPost has discovered (via MacRumors) several components claimed to represent iPhone 5 parts, including the headphone jacks (above), camera lens and proximity sensor flex cable which is pictured in the above below. Note that these are actually iPhone 5 replacements, not the actual parts used in manufacturing of the handset.

They were floated by Chinese resellers and as such may or may note indicate the internal design and features of the handset. It could be also Asian resellers looking for some free press. “They’re superficially similar but are subtly different to the iPhone 4”, notes the publication. The most interesting takeaway is that the headphone jack replacements come in both black and white, suggesting Apple will offer iPhone 5 in two colors, just like its predecessor.

Apple has allegedly lined up its supply chain and contract manufacturers to begin producing iPhone 5, just in time for a rumored September/Otcober launch. And if a DigiTimes report is anything to go by, the company has upped H2 2011 iPhone orders to 56 million units from a previous goal of 50 million units. These 56 million iPhones cover current and next-generation models: iPhone 3GS, iPhone 4 (GSM + CDMA), and the upcoming iPhone 5. This jives with another story by the same publication telling that iPhone 5 will make up almost half of Apple’s 2H 2011 iPhones with 25.5-26 million total units.