I'm an old enough fan to remember the trailers for the original release, and to be honest it was the same sort of stuff then. As Angus says, you're not going to know that's a scene from the penultimate battle unless you've already played the game.
I guess showing the Triforce converging as Link and Ganondorf get close is a little spoiler, but if you even know what the Triforce is, you probably already know OoT like the back of your hand (no pun intended).
As for graphics - I mostly like it. It's a 'polish-up' rather than a 'remake'. In a similar vein to Perfect Dark's polished XBLA rendition. Much the same, even to look at. Just smoother all-round. In this way they have paid homage to the original, rather than try and remake it.
My one critique is that animation, physics, and overall 'look' seem more cartoon-y. The N64 original seems to have more 'realism', and tries less to look like a cartoon. I greatly prefer the more muted colours of the N64 game. Here it looks garishly-bright like a Mario game, whereas in it's original guise it had a somewhat 'impressionist' look about it.
N64 is still where it's at for me, but nonetheless this looks good in a different way, and should be a great way for new players to experience the game. Vets like me will probably prefer the N64 version for all sorts of reasons (some valid, some not).