Two iPhone models, the iPhone 5S and the so-called budget iPhone, are pegged by analysts to arrive September this year but new indications now suggest the handsets' release date is likely to happen in advance.

In the build up to the appointed date, which for now only Apple knows, iPhone supply chain players are ramping up not only their production activities but also their efforts to provide hints that further stir up Apple fans' excitement.

Below are three fresh clues that paint an earlier release date for the iPhone 5S, which experts said could crash the tech scene ahead of schedule, specifically between the months of July and August.

A leaked image of the supposed iPhone 5S motherboard

Through the joint efforts of French blog site NowhereElse.fr and Japanese retailer Moumantai, the world is now looking on what they claim as the iPhone 5S phone board. Highlighted in the provided picture are the reworked camera components that support earlier reports Apple plans to deliver killer camera features via its new flagship.

The parts' revised shape and connectors seem to back recent rumours that the main iPhone 5S snapper will rollout with a 12MP camera sensor plus powerful features such as the ability to capture high-quality images even in low-light conditions.

Pre-registration for a top-notch iPhone screen protector is now live

According to Phone Arena, pre-registration for new iPhone accessories has started on the official ZAGC website. The company is known for the hugely popular Invisible Shield or iShield mobile phone film protector. The iPhone variant is a bestseller as it wraps the entire unit - the front, the back and the edge - in a thin and transparent covering that resists dents and scratches.

The advance offering from ZAGC, however, could be explained by the relatively unchanged body design of the iPhone 5S, which analysts said will take the same outside appearance of its predecessors. Though it is likely too that the company obtained in advance a template of the iPhone 5S actual make.

Apple is opting for the earlier release iPad Mini 2 and iPad 5

Apple suppliers, Pegatron including, were reportedly projecting lesser revenues due to sliding demands for the iPad Mini. While the Chinese company denied the reports, the likelihood of Apple rushing the iPad Mini 2 and the iPad 5 release date floated if only to renew consumers' interests on the iOS tablets.

If true, then the iPhone 5S and the budget iPhone will hit global store shelves much earlier as it is unlikely for Apple to release its tablet lines ahead of the smartphone offerings. Normally, the iPad launch is preceded by the iPhone introduction, which has been the norm observed by Apple since the products were unveiled a few years ago.