From the preview:
Fantasy Flight Games is proud to announce the upcoming release of three heavy-hitting new SSU units for Dust Tactics!
No other army has suffered as much as the SSU since the beginning of the war. The years following the Axis invasion of the Motherland have seen devastating losses in both men and equipment. Now, the SSU responds by unleashing the Red Guards Anti-Tank Squad, Red Guards Command Squad, and IS-5 Heavy Tank.