Well, it's still technically a trailer, even though 11 Bit Studios' video of Frostpunk: The Last Autumn's is quite on the long side. Running at over 12 minutes, the video shows exactly what to expect in Frostpunk's upcoming expansion.
First and foremost, although fans are likely to be aware of this, Frostpunk: The Last Autumn is not a mere cosmetic take on the same thing. In fact, it comes with its own basic mechanics, buildings, resources, economics and as a result - its own gameplay flow, with the added sheen of fresh visuals.
Speaking about the visuals, Frostpunk's expansion is actually a prequel to the main game, which explains why everything is not as snowy as we're used to. The ultimate catastrophe is yet to happen, and you're brought back to the period where they're still researching the generator you'll know and love.
What this means for gameplay is that The Last Autumn does not rely on keeping your people warm and therefore alive. Frostpunk's project lead Jakub Stokalski stressed that narratively-driven gameplay changes were a decision 11 Bit Studios made swiftly and immediately after deciding they're doing a prequel.
Taking cues from Iceland's terrain, Frostpunk: The Last Autumn will challenge players in every conceivable way - be it terrain constraints, resource and economy management, laws and so on. At around the 6-minute mark, you'll get to see how strikes of disgruntled workers can halt the creation of what'll eventually become the lifeblood of your society in the base game - the generator.
One of the key concerns in Frostpunk: The Last Autumn is work safety, and as Stokalski mentioned in the video - you either find a way to ensure proper safety, or you find a way to deal with the consequences. And there will be consequences, as we've learned from the base game.