This trailer is a brief teaser for a game called Sword of the Stars: Ground Pounders, an extension of the SotS series which, as far as we know, has not actually been announced by Kerberos Productions (thanks Gamer's Hell). There's not much to go by in the trailer except indications that this is a sci-fi wargame using virtual cards, and word that it's "coming soon." According to the description, we should: "Stay tuned for info on PC/mobile demos and more about the game itself!" They also have a link to a preliminary website where you can sign up for alerts.