Rumors of a Google set-top box, referred to in certain circles as the "Nexus TV," have floated around since last year. Among the features of the rumored device is an on-board camera and motion sensors. Taking on Green Throttle's tech would indicate Google's intentions to possibly turn the device into a micro console.
Amazon is also supposedly working on its own game-centric box, and there's some expectation Apple could increase focus on iOS games with a new Apple TV. Current micro consoles like Ouya and GameStick have struggled to find a market.