Much is expected from the new iPhone version. Apart from issuing a reengineered hardware and improved software, all packed into a slick and thin brick, Apple is also pressured to replicate and even exceed what it has been doing in the past half-decade - earning billions and really quick.

And analysts, almost everyone, were in agreement that what will be unwrapped on Wednesday will only improve on what was seen in 2011. Hardware specs and features of the latest iPhone have been out for months, with details, attested to by unimpeachable sources, practically painting the near image of what the smartphone would be.

The new Apple toy is touted to deliver the goods in the same manner that its previous siblings have accounted for nearly 50 per cent of the overall Apple haul for 2011, Bloomberg said.

True to its form, iPhone galloped into another record first half in the following year, amassing more than $US16 billion by the June quarter and proving its ability to attract hordes of dollars despite losing its smartphone leadership to Samsung in the past few quarters.

The new iPhone debut inspire so much excitement that JP Morgan has forecasted that Apple revenues will likely bump up the U.S. economy by the end of the year, with almost everyone not raising brows convinced that the tech giant has the numbers to support the assertion.

Apple is the world's most valuable firm and holds so much cash and influence that if it chooses it can easily obliterate the competition like what it did to Samsung, at least in the U.S. market.

But proving in a U.S. court that its rival is a copycat and getting billions in damage payments will not satisfy the Apple pride. Brisk sales of iPhone will.

And there is no compelling reason that Apple will be frustrated by its latest offering, analysts said, though Reuters said that apart from leading the way the company has also taken a defensive stance largely because it has to protect what has been gained.

By being the dominant player, "they are more in a defensive," at the moment, Sterne Agee analyst Shaw Wu told Reuters on Wednesday.

With the heat and pressure on, Apple will unleash new gadgets in short intervals within the fourth quarter of 2012 and analysts expects much more than upgrades of the iPhones and iPads that will hit the market as holiday season sets in.

"Apple has the undeniable lead, but to stay on top they need to keep innovating," Forrester Research analyst Sarah Rotman Epps told Bloomberg.

By proving that its main arsenal is innovative products, Apple will purge the impression that it has become an industry bully, that its rivals were fairly defeated because it has the potent ability to come up with products that much of the world will want, and more importantly, will need.

The new iPhone will represent that thrust. Minus confirmation of the gadget's improved appeal and ability, forecasters boldly declared that at least 10 million buys will be registered by the handset at the end of the month, if indeed it will be on store shelves by Sept 21.

And by the closing weeks of 2012, it is not impossible that 50 million freshly-minted iPhones will end up at the hands of global consumers, according to NineMSN.com.

Those figures will dwarf the record sales numbers of Samsung's flagship smartphone - 20 million Galaxy S3s passing through sales stations around the world not in 80 days but 100 days or more.

Likely too, Apple will again overwhelm the tech world and maybe prove earlier predictions that by next year it will breach the $1000-mark in shares market price value, inching the tech titan closer to become a one-trillion-dollar class company.

By then, much of the expectations inspired and generated by Apple would have been fulfilled, thanks mostly to a pocket-sized device that has become one of the core attention of the world.