From their website:
Fantasy Flight Games is excited to announce the upcoming release of Troop Packs for use with Tannhäuser. Coming this summer, each pack further expands the Union and Reich factions by adding additional troops, tokens, and scenarios.
The Reich Troop Pack includes new Schocktruppen and Stossstruppen figures, while the Union Troop Pack comes with new Commando Alpha and Commando Delta figures. Additionally, these expertly detailed pre-painted figures all feature an alternate color scheme, making it easy for players to differentiate these new troops from the ones found in the core game.