Could the one handed use mode of double tapping the home button to bring down the content be a hint at an upcoming ability to run apps side by side?
It seems to be a perfect fit. Double tap to bring down the current app which takes up the bottom half of the screen. Then give the user options in the top half of apps to open and run in the top half of the screen.
It seems to be a perfect fit. Double tap to bring down the current app which takes up the bottom half of the screen. Then give the user options in the top half of apps to open and run in the top half of the screen.