From the announcement:
Bounty hunters, illicit technology, Salvaged Astromechs, pirates, and Black Sun operatives. The sixth wave of X-Wing™ starship expansions has arrived!
Most Wanted Expansion Pack
StarViper Expansion Pack
M3-A Interceptor Expansion Pack
IG-2000 Expansion Pack
Now available at retailers everywhere, X-Wing Wave VI marks the introduction of the game’s third faction, the galaxy’s Scum and Villainy, a collection of individuals loosely bound by their shady business endeavors.
Ultimately, the whole wave reflects the fact that this new faction’s pilots are less interested in teamwork and collective victories than personal gain. Their unique pilot abilities encourage different types of squadrons than those commonly employed by Rebel and Imperial players, as do their new starships, illicit upgrades, and Salvaged Astromechs.