Rockstar Games took the wraps off the teaser trailer for Grand Theft Auto IV yesterday afternoon, giving gamers their first look at the highly anticipated sequel. While only about a minute long, the trailer offers some key details about the new game. The graphics have gotten a big next-gen upgrade, the setting is clearly a skewed version of New York City, and the game puts you in the shoes of an Eastern European protagonist. Tor Thorsen over at GameSpot offers some additional details, but the big news is that all of the footage in the trailer was captured "in game" running at 720p high-definition. In other words, it's not a prerendered cinematic cut scene; the game should look exactly as shown when it hits the PlayStation 3 and Xbox 360 on October 16.