From the announcement:
Fantasy Flight Games is proud to announce the upcoming release of the Rise of the Empire expansion for Star Wars™: Rebellion!
Inspired largely by the characters and events of Rogue One, Rise of the Empire introduces a plethora of new heroes, villains, starships, troopers, and vehicles from that film, alongside other characters, ships, and events from Star Wars: Rebels and the classic trilogy, plus new missions that add more drama and intrigue to your games.
You can send Jyn Erso and Cassian Andor to recover the Death Star plans. You can confuse Imperials with false orders and assaults behind enemy lines. You can command Director Krennic and his finest death troopers. And you can set traps for the Rebel pilots and soldiers, luring them away from their base and into massive battles with more fully cinematic combat and tactics. Even Jabba the Hutt makes an appearance, offering his services to the Empire and feeding his prisoners to the Sarlaac.
Altogether, Rise of the Empire enhances your games with eight new leaders, thirty-six plastic miniatures, five target markers, two attachment rings, three new dice, and more than one-hundred new cards. You'll find U-wings, TIE Strikers, Nebulon-B frigates, and the Interdictor. You'll gain new ways of subverting your opponent's plans, and you'll discover a whole new chapter in your ongoing Galactic Civil War!