From the picture I saw, I can't really see an hourglass figure and bedroom eyes. Or the messier hair or bigger breasts that I've read about elsewhere. Are there other pictures that reveal the changes more clearly?
The 'changes' I do see appear to stem more from the transition from 3D CGI model to 2D drawing than a deliberate attempt to sexy her up. And really, that's sexy? Seems to me to be going too far to call this an insult to the character, as if Merida would never a nice dress and not be carrying her bow. Isn't that missing the point of the story, where Merida learns that she has responsibility and cannot always just do what she wants when she wants?
Rahh! Outrage! Loud noises! Because of course, the film itself remains untouched and impressionable girls aged 5-10 are probably, I don't know, going to be watching the film a lot more than they go visiting Disney parks and browsing the princess-themed website.
Imagination will often carry us to worlds that never were. But without it we go nowhere. - Carl Sagan