Just loaded up the unstable release and generated an entire globe. Pretty amazing before you even get into the game part of the game.
Then I dev'd up a 10 man colony with charge rifles, packed a nice survivial ration lunch, and formed a caravan to attack a tribal settlement a few hours away. That opened up a whole new map generated for the encounter, they had a few wooden sleeping areas and a larger sleeping area without permanent beds. It was all heated by torches and they had a store house full of pemmican and smokeleaf. I restricted my fighters to a small area far away from their camp and started cutting down trees and building a small wooden structure to protect from the cold and assembled an incendiary mortar. Once they started sleeping I opened up with the mortar, setting fire to their structure. They don't seem to have firefighting ai so they lost almost everything very quickly. After that I sent half my force to harass them from the front and the other half to blow a hole in a wall and create a flank. I got the alert that the outpost had been destroyed and then, deciding it was nicer than my current map, abandoned my old site and settled there.
This is pretty awesome. Since you have pretty free access to your normal tools during an attack I'm thinking about hostile outpost mining. Sending in an armed force to build a secure camp and drill for minerals where we aren't welcome.