So not a big deal but I'm wondering if anyone else has noticed that when apps with icons not yet designed to take advantage of the iPhone 4's retina display (Pandora for example) are updated, the app icon momentarily appears to have been updated to appear sharp and with no pixelation, like any other app icon that has been updated for the iPhone 4's display. However as soon as the update is complete and the loading bar disappears, so does the sharp looking icon. Instead it goes back to the fuzzy old one. Why is this? Is it a preview of what's to become of the icon in the future or is my phone failing to retain the new icon's "retina look"?