You know the biggest thing about Google TV IMO was the fact that it integrates Chrome and Android in a supposedly harmonious way.
If this pans out the way I think it will Google could effectively marry three OS's into one super OS custom built to fit the need of the device at hand. Chrome OS is basically Chrome and with Google TV they showed that Android and Chrome could work together. This could mean Android apps could run on Chrome OS as well as the more powerful web apps. Plus with synching between the three this could make for a very unified ecosystem. I for one can not wait for Chrome OS now.
I wouldn't be surprised if Google ends up going a Apple type route where they have this underlining OS (Android) that is built to work on lower powered devices and tweak it for other devices (GoogleTV, ChromeOS, etc)