A close up of the iPhone 4's retina display, showing the home screen.
Zoom in to the original view to see the detail. Note, however, that Facebook, Geocaching, 1Password, Reeder, TV Forecast, and PingChat! 2 are all slightly blurry because they've not yet been updated with high resolution icons for the new display.
Wallpaper available here: macthemes.net/forum/viewtopic.php?id=16804472