Microsoft confirmed today SmartGlass will launch alongside Windows 8 tablets on October 26, with Dance Central 3 and Forza Horizon among the first games to support it. The Xbox 360 app, which turns devices into secondary screens for the console, will be available for Windows 8 phones at launch on October 29. SmartGlass is expected to arrive on iOS and Android in 2013.

SmartGlass is implemented in the latest Xbox dashboard update, which Microsoft tells us it's rolled out to 3 million users so far. Another wave will receive the dashboard update today, so more users should have access to SmartGlass when the companion app becomes available for Windows 8 tablets on Friday.