Apple now require that a 1024x1024 icon is submitted for the App store. Where can I see an example of where this icon is used? The largest icon I can find in the iTunes store is about 180x180 - even on a retina screen, 360x360 would be sufficient.

I am putting some time into designing a large version of my icon, but if it is going to then be shrunk down, I need to design for this, no?