Above words are from Real Clear Politics, and I'd say that the writer is wrong. Sarah's plans for being there are old news ... and she will be there.
Very recently I heard her say she has rented a large place down the street from the convention hall. I’m thinking that’s where people will go to have contact with her. That did sound like she won’t be in the convention hall. She wouldn’t step on Romney’s parade and it’s clear he doesn’t want her around.
Since she is a Fox contributor, she will likely be in the Fox News “box” there often during the convention time.