They aren't getting rid of the Chromecast streaming. Google TV does both Chromecast and the Android interface.
The one difference is that Google TV runs the app for service if installed and streams with that. It is nice to use the remote when streaming instead of pulling out phone to pause or change volume.
The one difference is that Google TV runs the app for service if installed and streams with that. It is nice to use the remote when streaming instead of pulling out phone to pause or change volume.