Sure, it might be premature to label Jyn Erso an "icon" before Rogue One has even hit theaters, but given the meager number of women action heroes, she's already certified as a future icon.
Not much is known about Erso yet, but that'll obviously change as we get closer to Rogue One's release date. We do know that she's got a rap sheet that includes forgery, possession of stolen property, aggravated assault, and resisting arrest. Nothing huge, but I'm hoping that there's more in her criminal record, because I can't imagine the Rebels recruiting someone for such a dangerous mission based entirely on what is honestly petty crimes.
I have high hopes for Rogue One because it'll be interesting to see a war movie set in the Star Wars universe. Hell, it'll be nice to see a Star Wars movie with (hopefully) no Jedi.