Shawn Blanc, writing for his personal blog:

If I were a betting man, I would wager that the iOS Home screen as we know it today is not Apple’s long-term plan. My hunch is that the Home screen is still the way it is because the long-term ramifications of what it could be are huge.

[...]

Rebuilding the Home screen isn’t just about increasing usability. It is also about innovating at that “front-door interface” of how and where we get to the stuff on our devices (you can hardly do anything on your iPhone without going through the Home screen). Moreover, the ramifications of a reimagined Home screen go beyond iOS. As we are now learning via Lion and Mountain Lion, innovation on iOS is a setting of the stage for innovation on OS X.