When I turned on TV this am it was in the middle of that interview. She preceded her question with "Others are saying". It was certainly not her opinion.
In fairness, when Katie is attacking Republicans, we often criticize her for using the vague "some say" as a cover for her own opinions, so I think it would be unfair to turn around and claim that she really was only passing along other people's opinions when, for once, she says something supporting the Bush administration.
I watched the entire interview carefully, taped and reran it several times. As a veteran Couric-watcher, it's my considered opinion that she was largely speaking her own mind.