Expecting Apple to come out with a bigger screen is not realistic at this point. They put a good amount of money into advertising how perfectly you can reach the screen with one hand. It would look bad if they made a phone that contradicts their perfect setup.
This exactly.
EDIT:To be fair, most, if not all, manufacturers contradict themselves at one point in time. I mean Apple did it when Jobs went on about how 3.5" is the perfect screen size and you'll never need anything bigger. It being Apple means they can put a positive spin on the release of a 4.5" iPhone.
The market is totally digging the 4.5"-5.5" phones, and Apple has a 4" one. I realize a lot of people love Apple for what they make which is an incredibly solid and well built device, but there is a growing amount of people that have switched from the 3.5" and 4" screen to an Android device because it has a because it has a bigger screen. Not to mention, Android has had larger screens since 2008.
Apple put themselves in this awkward position. Their philosophy is keep things simple and usable (essentially). Which they've done a wondrous job of for the past 6 years. The thing is that Android, software-wise, has developed insanely fast to be an insanely competitive platform. The devices are catching up, have caught up, or surpassed the iPhone (all generations) in terms of look, design, hardware, touch, taste, etc..
Apple sticks to the same paradigm of having only one device per year. Consumers have caught on to the fact that they can figure out a way to upgrade their device regardless of the new-every-2 thing most carriers have. They can try 20-30 different Android devices in the time it takes Apple to release a software update or a new device.
Many analysts have thought it best Apple produce another phone to cater to a different portion of the market. In a way, it makes perfect sense for Apple to do that. It'll definitely shake up the market a whole heck of a lot. I'm not saying the general consumer is an idiot or materialistic, but when it comes down to it, if they want a 4.5" screen or 5" or whatever, they're going to begrudgingly go to another device. If they had an iPhone to begin with and Apple has a 4.5" device, they're not going to even think about their next upgrade.
Anyway, that was a long enough post. Need to get back to work.
