It obviously cannot be exact but when I first saw the icon in the event video on the big screen, I had to do a double take, back up and squint. Probably ingrained in my minds eye from the two years I had the Storm.
It's just a variation on a theme. the Ginger/froyo app icon was a grid in a square. Since ICS is a serious UI lift, they made the icon sleeker and made the square a circle