Today, Paradox Interactive announced that Hearts of Iron IV: Together for Victory -- the World War II grand strategy's first expansion -- is set to release on December 15th for PC at the price point of $14.99 USD. Additionally, Paradox has also released a new developer diary video.

According to Paradox, Together for Victory is not only on the game's first expansion, but sets the model for many future add-ons, bringing new detail and gameplay options to nations outside of the great powers. Canada, Australia, New Zealand, South Africa and the Raj of India have been given unique National Focus trees, more leaders to choose from, and a selection of industrial corporations to add extra color to your experience.

Here's an official, more detailed, rundown of the expansion's features:

  • New Autonomy System: Subject states are not merely puppets, but can have a range of action. Dominions, Puppet States, and Colonies can either work their way to total independence.

  • Spearheads: A new order simplifies breakthroughs in land invasions

  • Continuous Focuses: Choose a National Focus to boost your nations capabilities over time, prioritizing one aspect of your military machine over another

  • Alternate Histories: Each of the Dominion nations has alternate history branches. Lead South Africa to a Communist revolution that will end segregation but alienate Great Britain. Make Canada a Fascist state warily eyeing the giant to the south.

  • Tech Sharing: Cozy up to an advanced great power and take advantage of their research progress to accelerate your own development.

  • Combat Log: Extensive details on the performance of your divisions in battle are now available for you, Commander.

  • Request Lend Lease: Ask for assistance from across the seas in the form of lend lease, adding new vehicles and equipment to beleaguered armies.

  • New Art: New portraits for new leaders, old leaders have some portraits redone, and new unit designs and event pictures make their debut.

As mentioned above, a new developer diary video featuring Game Designer Dan Lind has also been released, it presents a short summary of what you can expect with the expansion.

You can check it out below: