Actress, Rachelle Lefevre, will no longer be playing the role of Victoria in Eclipse. The part is going to be taken by Bryce Dallas. You may have seen her in Spider-Man 3 or Lady in the Water. It's sad to see Rachelle go.
Personally, I loved Rachelle as Victoria! She was the Canadian addition to the cast, but I suppose she had other engagements. But, we don't know what the turth is for sure, so Im not going to take any sides. I'm sure Bryce will do an amazing job as well. And we still get to see Rachelle in New Moon when it arrives in November.