iPhone 4

Is it as revolutionary as the first one? No. Is it a vast revolution from the 3GS? No. Is it awesome? Yes.

There are three things that I'm most looking forward to with this new iPhone.

1. Sharper screen. I think this will make reading a much more enjoyable experience.
2. Improved camera. Flash is probably the most important addition here but I'm also looking forward to the improved resolution, clarity and the dual lens. HD recording doesn't hurt.
3. Three-way Gyroscope. Finally the iPhone will have the hardware that will make games like Super Monkey Ball an enjoyable experience.

There are many (many) people who will dismiss these improvements as things that have been available on other platforms. Very true. But there's no arguing with Apple's installed base. And developer base. Once devs optimize their software for the improved hardware, there's no telling what could come about.