It was a toss up between the first and the second trailers, but they are pretty much the same, both featuring Snoopy and Woodstock. Nothing we haven't seen many times in 2-D form already. Hopefully the movie will be original, and not just rehashing tropes we've seen already (ahem, Abrams Star Trek movies). I'm not going to hold my breath though.
And the characters look weird in "3-D". They were never designed that way. Heck, even Schulz said they had a hard time doing some of the animation originally because he never thought of that back then. He designed them to be humorous in the best bigfoot tradition, which doesn't always translate well to cartoons. I'll probably go see the movie, but I'm not thinking it's going to be great.