If you add a URL bookmark to your home screen on a 1.1.3 iPhone, what does the icon look like? Is it customizable?

So, apparently the cat is out of the bag on the upcoming 1.1.3 iphone update, but I can’t find anywhere that has an image of what the icon looks like when you add a web page to your home screen. It must be some generic Apple icon, or is it customizable (maybe by storing an icon of certain specifications at a specific location on your website). Has anyone seen further details on this particular feature of 1.1.3? A photo of the home screen with web page added perhaps?