With the market percentage Apple has lost to Samsung and Google over the past few years, I believe they cannot afford to underwhelm with the next release of iPhone. The phone needs to have all of the features of Spark, plus other perks to outclass their rivals. If they do not in this next release, they will set themselves back several years and may never catch up.
I remember waiting for the next upgrade for BlackBerry for over a year and it did not happen. My BlackBerry was becoming unreliable so I switched to the iPhone 5. Now, RIM is not even close it used to be. I just do not want to be on the side of the dinosaur again.
Apple needs to be on the front edge of the tech wave. not in the aftermath of a tsunami.