Ice Cream Sandwich has to be the mobile industry's best kept secret yet. Very little is currently known about it and we're only weeks away from the official release date. The only thing we've been told is that it's a mashup of Honeycomb and Gingerbread. What that will end up in, no one knows. However, a lucky Nexus S buyer from ebay might have ended up with a golden device because his Nexus S came preinstalled with Ice Cream Sandwich, or so it seems. The following video is a 2 minute walkthrough which shows the camera UI, the main home screen, notifications menu and app drawer. It is learnt that Google has now remotely wiped the device, which further leads us to believe this might be the real thing. Read more to watch the video.