Rockstar has posted a confirmation at their official site stating that the footage we saw in the first GTA V gameplay reveal trailer, was running on the PS3 version of the game.
Quote from the site: "Just to clarify for those asking, this particular video was captured with footage from the PS3 version of the game."
The GTA V official gameplay trailer was finally released yesterday, and it was amazing. We saw incredibly detailed graphics, cool new features, and a bunch of awesome gameplay mechanics like diving under water and exploring the depths, sky diving, playing games like golf, biking, car customization with over 1000 different ways to modify your vehicles, and a ton of other cool new features. Check out our full trailer breakdown for our take on it.