I'll remain very sceptical until they reveal something that is would actually make the game unique. Like, unique for real. Not gimmicky bullshit like voice acting (most insignificant "feature" ever?) or rifts or whatever.
Seriously though, I wouldn't get too excited about it until you get to try, say, an open beta. The game's just concepts until proven otherwise. And even then, I wouldn't expect it to play like the rest of the Elder Scrolls games.
Oh for crying out loud -- that's a cinematic trailer. It's already been revealed that the actual game will pretty much be TOR but with dodging and blocking. They're even going to make the main quest be essentially SP like TOR.
Yes, it's a very pretty trailer, but like every CGI cinematic trailer -- none of that was game content. That's what they'll probably use as an intro-sequence. It has nothing pertaining really to the plot or what players will be doing, beyond a three-way faction system.