The iPhone SDK, or at least its beta version, as the final one will only be released in June 2009, has been placed at the disposal of developers – and even though some questions have found their answers, new dilemmas arise.

We know Apple will distribute the applications through AppStore; we know the company will receive 30 percent off the price of each application; and we also know an investment fund exists that has promised to invest 100 million dollars in people who wish to develop applications.

What no one seems to know though is how these applications will change the iPhone’s future.

The number and quality of developed applications will certainly influence the way the iPhone is perceived from now on. In June, when the final version reaches developers, we will certainly witness the real explosion of applications.

Some of them will only try to exploit certain features, others will attempt to give the Apple gadget new uses while others still will extend the range of existing features.

It will be interesting to see if there will be one killer application that redefines the iPhone. Why is a killer application necessary and why would the iPhone need redefinition you ask?

IPhone soon celebrates its first anniversary which is old age considering the average life expectancy for a premium product. Try to see which of the premium mobile phones launched a year ago still have the same price or are still fashionable.

Unlike the iPod, the iPhone is on a market where competition is unforgiving and barely a week goes by that new models are not released.

As it is, numerous mobile phones have already successfully adopted the touchscreen, that one feature that singled the iPhone out among all other models.

Once its product turns 1-year-old, Apple will have to do something to resuscitate consumers’ interest and fascination. Aside from improvements and a 3G model, there’s little Apple can do in this direction.

The company is nevertheless not a mobile phone producer that can afford to release a new model every couple of months.

Which means the next surprise should be in the software category and make the iPhone unique once more. What is this key application to be? Will it be related to gaming? To business? Will it be an application that only its inventors can fathom right now? We can expect an answer or at least some clues by September or October.