Star Wars X-Wing (2nd Ed): Sith Infiltrator Expansion Pack - Rules of Play says:

With the Sith Infiltrator Expansion Pack, you can use the experimental cloaking device, devastating firepower, and advanced systems of one of these ships to deliver vicious surgical strikes before vanishing into the void. In addition to the finely detailed and fully painted Sith Infiltrator miniature, you’ll find a collection of five ship cards, including Darth Maul himself, twenty upgrade cards that help you fully utilize the ship’s systems, and all the tokens and maneuver dials you need to launch your own secret missions.