Google has now provided a way for developers to get started on their Google TV apps and emulate televisions in the sdk. With the new tools, developers can test their existing mobile or tablet Android applications in a big-screen environment, eventually porting them over to run on Google TV. It’s also possible to create new Android applications made specifically for Google TV.
They wrote about it on their android developer blog.
It is provided in the Google TV SDK addon. It’s just a matter of time before we start seeing these new apps for our living rooms.
Additionally, and possible more importantly, the Google TV UI Guidelines are now posted as well.