I've not played that video as even the static is spoilery, but it's SO tempting. I even stopped watching an unboxing video when they switched the console on as I want to enjoy that for myself
Anyway the reason I came in here is to allay some people's fears that you'd be wandering around barren grassland with the occasional spot of action if you manage to find it, but EDGE, which has the first full review* (rather than preview) of the game says the game is very dense and the world "an absolute, and unremitting pleasure to get lost in". Cannot wait!
*They gave it a 10, btw. Another site I read that is very honest/critical says it may be the best game ever, and while that may be hyperbole, coming from them, it makes me super positive.