Google’s announcement is almost certainly a brand new console - Ars Technica

Oct 28, 2017
There is no hardware they have just announced it
the ad had people playing on TVs I think, I doubt everybody's TV will accept that controller as a remote, so maybe in a future announcement. Now that I looked again at it it seems like the rumors of AC Odyssey running on it may have been overblown since it looked pretty low res compared to the normal versions. (could have been compression)