Star Wars X-Wing (2nd Ed): Xi-class Light Shuttle Expansion Pack - Rules of Play says:

Within this expansion, you’ll find a beautifully detailed Xi-class Light Shuttle miniature along with everything you need to launch it on your own secret mission, including a medium plastic base and two medium ship tokens. Four ship cards let you dispatch some of the First Order’s most elite agents to do your bidding while 14 upgrade cards let you assign additional crew members to the ship and outfit it with new technology.