I believe it's the international take, although they may have edited sections for both trailers/teasers.
"In theater, the process of it is the experience. Everyone goes through the process, and everyone has the experience together. It doesn't last - only in people's memories and in their hearts. That's the beauty and sadness of it. But that's life - beauty and the sadness. And that is why theater is life." - Sherie Rene Scott
Oh wow. I hadn't heard this cut from the international trailer before. Anne sounds SOOOOOO much better in that version. I hope they use that one in the film.
I think for teaser purposes, maybe they wanted to emphasize how the actors will be more acting than singing? But I am very happy to hear they will be using the international take. She sounds fantastic.
I'm cribbing this from the IMDB message board, but there's a feature in Empire magazine on Les Mis and Anne was asked:
Q. The two trailers show different versions of the song, one fragile and one quite angry. How many takes did you do?
A. Quite a few, but there was only one that really mattered: the angry one. Funnily enough, when I watched the trailer with my husband, he looked at me with tears in his eyes and I had rage in mine. Well, maybe more fear. They took a rehearsal version and put it in the trailer. I was so confused because Tom and I had agreed which take we would use and that wasn't it. I called Tom and he investigated and the marketing guys said, 'The version for the movie was a bit too raw for the trailer, but your version will be in the film.' So I felt better ... They made the right choice but that initial moment was a big shock. I was just being weird about it.