Right alongside the Nexus 7 images are images of yet another new device called the Nexus Q. Very little is know about this device right now, only that it's a "social streaming media player."
Okay, so it looks like the Q is a device that connects to your Wi-Fi networks and interfaces with your Android phone or tablet to stream your media. It also allows you to build collaborating playlists with other people, using - get this - Google Play@Home! That's right, Android@Home is now Play@Home and starts with the Nexus Q. More info: