From reading various forums, I don't think Disney and More's sourcing or info is necessarily wrong per se. I just don't think Universal has finished their plans. As in they have various ideas for different lands, parks, rides, hotels, city walk, etc like this article describes, but that nothing is set in stone and pieces are still moving. Not to mention they still have an ongoing lawsuit for some of the area slated for the expansion and they are still negotiating rights to Lord of the Rings (maybe the negotiations are finished though, as the article implies?)
So whatever ends up happening is going to probably include a lot of what was written in here, but things might be cut depending on what happens with lands/licensing etc.