Rogue One is the first Star Wars movie not in the "Saga", meaning it doesn't specifically tell a Skywalker-centric adventure. It's a "story", making it a Star Wars movie that can be anything. In the case of Rogue One, it's a heist/war movie about the plans for the first Death Star. So now the question is, what should a Star Wars story look like? Even the President of Lucasfilm herself, Kathleen Kennedy, does not yet know. Speaking to Entertainment Weekly, Kennedy revealed they still haven't decided if Rogue One, or the other Star Wars Stories, will have its traditional opening crawl.
"We talk about that all the time. It's something that we're right in the midst of discussing even now, so I don't want to say definitively what we're doing," Kennedy told the magazine. "The crawl and some of those elements live so specifically within the 'saga' films that we are having a lot of discussion about what will define the [stand-alone] Star Wars Stories separate and apart from the saga films. So we're right in the middle of talking about that."
The article in question is also the first place some of the major Rogue One players, like Kennedy and director Gareth Edwards, talk on the record about the film's reshoots. You can read the quotes on the site, but the basic message is that everything is normal, the tone and story aren't changing, it's just small things. Is that true? Does it matter? We'll find out in December, along with if the film has an opening crawl.