The second trailer of GTA IV with this time real game play footages has been released yesterday. And it looks amazing. You can see a motorbike, a few cars, two helicopters (one is a black hawk), a bunch of guns, and I think at the end the main character (Niko Bellic) is using an iphone. In this episode you will be able to enter in more buildings then in the previous versions, which is a good thing. Also you can see niko firing an assault rifle, and he is carrying a bag which is also one of the new features of the game, being able to see everything you carry. You will also be able to hold on the back of a truck or on the skid of helicopters
The game should come out in October this year! for more information follow the guide!