Going up and down the halls here, I often pass by the development office. I can always tell when they're working on new XenoShyft cards when I hear them cackling with sadistic glee. They're currently getting all the workings right for Dreadmire, the new expansion coming to Kickstarter in January. They've posted some previews that I thought you'd like to see.
As you can see, there's references to different weather types on the card. That'll be something new coming in the set. Any military historian or tactician will tell you that weather is a major part of any conflict. Entire wars can and have been turned by mother nature, herself. Weather will also play an effect in Dreadmire, granting new abilities to cards depending on what it's like outside.