Not quite what the thread is about, but there are enough people out there that can still see the pixels or at least their jagged effect with Retina pixel density. While there's no need to go higher and higher continuously, going somewhat beyond Retina certainly wouldn't hurt that much and would still have a noticeable improvement (less for some, somewhat more for others).I'll never understand the obsession with ever higher pixel density. At some point, you are physically unable to distinguish individual pixels. And the iPhone's retina display has reached that point. There's really no point in increasing the current pixel density. More pixels add more strain to the processor and battery life is sparse on any mobile device, so why would you want to have more pixels?
Even big manufacturers like Samsung or HTC don't seem to understand that.
I agree though that I'd like to see the swype keyboard on the iPhone.