I am about two days behind, so I need to see the new do.... but I will agree her old style was looking dated and worn. It had gotten too long for her I think --- was watching an episode from about two years ago on BBC Canada and it looked much nicer then.
The cut is great, but I think equally important is that they evened out her color. It was looking pretty naff. I know she was supposed to be in jail and all, but if they have prison tattoos, don 't they have prison dye jobs as well? She really looks alot better.