Steam now holds an official release date: February 13th 2018. And if anything goes well with intel, I will have a new system by then as well.
Watch the two videos on the steam site, then look me to the eye and tell me you are not impressed!
I think a lot willl depend on to what degree this is a game like an interactive movie, or indeed an open world game with open play possible like in Bethesda's games.