Apple's iPhone 5S release date this year generates too many whispers that the actual arrival of the flagship device now appears a confusing proposition.

This week, analysts called the launch date on Q4 2013 citing production difficulties but the claim was immediately contradicted by a leaked document, coming from a Japanese carrier, that suggests July is the month to truly expect the iPhone 5S and its twin cheaper version.

Regardless of the new information, current signals seem to point to a late 2013 rollout for next iPhone iteration and here are the reasons why a September or October debut for the upcoming iOS device is more believable.

Because Apple CEO Tim Cook says so

In his recent earnings call, Apple chief executive Tim Cook let out quite a mouthful of clues on what and when to expect from the tech titan this year. There were no specifics, of course, but Mr Cook simplified everything by declaring that Apple is definitely prepping great surprises for global consumers.

And one more thing, these exciting new Apple products should begin their creeping revelation in the U.S. fall quarter, effectively ruling out the possibilities of us getting a peak on the iPhone 5S a few months from now. Since the chief has spoken, it's hard to imagine anyone running in counter with his claims. Unless of course he is unceremoniously booted out as some reports suggest.

Analysts in support of the CEO assertion

Credible analysts like Ming-chi Kuo of KGI Securities echoed the sentiments that an iPhone 5S coming out in June or July is rather premature. Apple needs to settle first some pressing production glitches, Mr Kuo, before it can actually push the button that would set off the new smartphone's global distribution. The same goes with the overly-anticipated iPad 5 and iPad Mini 3, the analyst added.

If there would be a product that would grab the spotlight in the upcoming WWDC, it is the newly revamped MacBook lines, Mr Kuo said. The move is high-time, analysts said, as the Apple personal computers have long been eclipsed by their mobile device cousins.

The great iOS makeover

And while Apple is endeavoring to re-ignite interests to its desktop and laptop offerings, a parallel effort is underway to come with a more compelling version of its mobile platform, which reports said will be known as the iOS 7.

It makes sense, experts said, that Apple will time the release date of the iPhone 5S, the new version of the tech firm's biggest money-maker, with the completion of a more powerful and intuitive iOS edition.

In a report, 9to5Mac claimed that Apple engineers are working to come out with the latest version that will shed the unnecessary bulges - both in form and function. That would mean we can expect a lean and mean iOS 7 to roar out later this year, which translates to lighter but beastly iPhones and iPads to grab.