According to a nola.com article, apparently, the negative comments from the Jackson family and press were all one big kerfuffle (my word of the day) on account of unauthorized comments from a financing broker.
This post is not to cast any judgment whatsoever. The producers are looking to begin shooting the film in January which gives little time for Barrino between having her baby and the filming start date. No disrespect intended, but, personally, I think Sunday Best season 3 winner, Le'Andria Johnson would do a wonderful job playing Ms. Jackson. She's already proven that her voice is dynamic when performing Ms. Jackson's "Trouble of the World"