GameInformer have been quick to post up a couple of new articles on some of GTAV's gameplay mechanics, shortly after today's gameplay trailer debuted. The articles focus on the specifics of Gun Combat and Customisation. Game Informer were also nice enough to give us 7 new screenshots! Summary of new info is after the screens.
2nd link has an error.
In addition to the many cosmetic customization alterations such as body kits, paint jobs/finishes, wheels, exhaust tips, window tints, tire smoke color, bull-bars, extra lights, and lots of other extra accessories, we have modifications that will affect gameplay and vehicle performance. Some of the modifications that affect gameplay include brakes, engine tuning, suspension, horns, bulletproof tires, panel armor, and of course, a general repair! There are more than 1,000 modifications in total.
On the topic of customization, I think the ability to tune the car should downplay any worries that the driving will be neutered. R* said they want to make the gameplay as dynamic as possible so it doesn't make sense that they would make the driving arcadey, that is the opposite of what you would want. I really hope it has depth to it, the modifications allude to that possibly, but I want to hear more from people who have played it. Say what you want about IV's driving, but it doesn't hold your hand which makes you have to work to get away from the cops. If they go all Saints Row on our ass, then what is the point of having smarter cop AI when I don't have to work hard on mastering the driving.
I missed some of these too, just Googling GTA V to see what's out there, if it's a screen cap from video for example, it's not going to be in Rockstar's official stills, at some point hosted entirely on their site I should think, but some are exclusives made available to gaming press