Really looking forward to this one, I love the first one, and I'm sure the sequel will live up to it. One of my pals mentioned this to me first but I never got around to googling the trailer, glad I got to see it. I'm just interested to see why the Hiccup's mom has been off on an island all this time.
I've seen a few episodes of the show but I'm not much into television. It seems like it stays true to the movie, but I never learned what happened that amputated his leg. I'll have to do some googling on that too I suppose.
The CGI looks really solid in the trailer, it just adds to the overall appeal that much more.