From the announcement:
Fantasy Flight Games is pleased to announce the upcoming release of Campaign Book Hades, a supplement for Dust Warfare! The pivotal battle for the doomed city of Zverograd has dragged on for months, and all three factions now seek any means of breaking the stalemate. Campaign Book Hades continues the tense struggle for this all-important metropolis, while adding new rules, options, and stats for upcoming Dust Warfare units.