Han Solo won't be in Rogue One
This first spin off is a pretty big deal, and its setting up all manner of things to come, including a dedicated movie for the great Han Solo himself, as played by young Alden Ehrenreich. That's going to be lots of fun when it debuts in a couple of years but a recent rumour had suggested we might get to see the character early, with a cameo in Rogue One.
That's not true though, at least according to Rogue One director Gareth Edwards, who should probably know.