In the video below, we see a Samsugn ATIV S and a Windows 8 tablet in action interacting with the Xbox 360 and each other in sharing an internet browsing experience and media as well.
This also positions the Xbox to be more than the pure-power-gaming machine that it already is. This extends the “reach” of Xbox and opens a whole new audience for it as it becomes a service rather than a gaming console that can also play DVDs. Another cool features is that it looks like SmartGlass itself will also run across other platforms to connect your Xbox to them, Android and iOS.
As to when we will know more, we might see a bit of this in action at the Windows 8 event, and certainly learn more about it at the Windows Phone 8 event since SmartGlass is an integral part of the experience that Microsoft will want to convey to give their new mobile OS a big boost. We will be at the Windows Phone 8 event covering all the details.