From the announcement:
Fantasy Flight Games is proud to announce the upcoming release of Operation “Hades” for Dust Tactics!
When invading Axis forces descended into the sewers of Stalingrad to move about the city unimpeded, the Soviets sent their own troops underground to stop them. The bitter fighting that took place there marked the beginning of the RattenKrieg, or “Rats’ War.” The confined spaces and narrow sewer tunnels became a hellish battlefield, unlike any before seen in the history of warfare. The claustrophobic environment was perfect for traps and ambushes, and every squad knew that death could be waiting for them around the next corner. The Rats’ War may have come to life in Stalingrad, but it plays an even larger and deadlier role beneath the city of Zverograd.
Scheduled to arrive in the fourth quarter of 2012, Operation “Hades” introduces new rules for subterranean warfare, superhuman soldiers, new skills, and richly detailed information about the city and battleground of Zverograd. It also brings you thirty-one tiles, a Zverograd city poster, a map of the Zverograd metro, six new scenarios, and over two dozen objectives to serve as the basis of your own scenarios. Finally, Operation “Hades” marks the arrival of Winter Child, the game’s first superhuman soldier.