From the announcement:
Operation “Icarus,” an expansion for Dust Tactics, is now available at your local retailer and on our webstore! Beneath the city of Zverograd lay ruins filled with the promise of alien technology and VK energy, and the Allies, Axis, and SSU will stop at nothing to secure the city once and for all. The Axis has a firm grip on the airfield just outside of this Soviet city. Meanwhile, Axis troops are taking cover in quonset huts and leveraging their new Horten HO-347s to defend the skies.
If the Allies have any hope of taking the city, then they must secure the airfield to utilize their massive air fleet. Operation “Icarus” brings the Allied assault to life as the airfield becomes the centerpiece of the contest for Zverograd. The Allied approach will not be easy with a distinct lack of cover on the airfield, the entrenched Axis forces, and the SSU still trying to hold the city itself.