Apple watchers got the strongest hint yet this week of the impending iPhone 5S release date, which a new report will come between September and October based on purported production activities build up in the months ahead.

The clue came straight from Avago Technologies, a long-time supplier of wireless chips used in iPhone models, according to Apple Insider.

Citing recent 'signs of life' from the Apple contractor, Wells Fargo Securities issued a new projection that points to "an initial ramp of a new product transition (we believe iPhone 5S) and expects a greater ramp in the following quarter (October quarter)."

"We anticipate more positive supply chain news from Apple suppliers through the summer and as we get closer to product launch," the new research note was reported by Apple Insider as saying.

And with the iPhone 5S launch date and commercial availability fast shaping up, the guessing game is on: What solid specs to expect from the Apple 2013 smartphone flagship?

One exciting suggestion comes from a new Apple patent titled 'Embedded force measurement'. This new technology, according to the tech giant, will allow the use of OLED flexible display mixed with a force detection sensor layer.

The result is an iPhone 5S that boast of a durable phone screen plus the possibility of introducing 3D control keys on mobile devices, Apple Insider said in its report.

A popular implementation of the new system is the GarageBand application, in which a user gunning to produce louder sounds can hit the piano keys with greater force.

Such capacitive keys also offer protection from natural deterioration and frequent usage, Apple Insider said, adding that "the baseline thresholds for capacitance and resistance ... can be reset daily ... to allow for extended use even if the flexible layer becomes slightly deformed over time."

This Apple invention will likely get a significant graphic boost, according to MacRumors, following the reported migration of a number of top-notch AMD specialists. Potentially, these new hires will contribute a great deal of expertise in Apple's 'Orlando GPU Team', reportedly tasked to develop the graphic muscles required for the A7 chipset architecture.

The emphasis of the project is quality and speed, which strongly suggests that Apple is deploying that best hardware that it can offer in time for the iPhone 5S release date, which should also show off Retina+ screen resolution and fingerprint sensor as among its prime upgrade offerings.