I have been told by my mates that you can swim, you can eat get fat go to the gym lose the fat and there are new gangs, I cannot remember who they are.
You can rob houses, banks and other shops and more. You can buy tattoes and get hair cuts and buy clothes and further in the game you might be able to get Nike Adidas. All of the clothes go into your wardrope and you are meant to be able to buy shoes when you go into the gym. You can lose fat and learn new combat moves such as street fighting and so on.
When you drive a car into the sea you are not dead and you can dive into the sea and swim under water and even sea fish swim and dolphins there are meant to be sharks as well.
There is a new target system which allows you to shoot in the leg which does not kill them, on the first misson of the game you have to rob two cars with a family friend and take them home with out destroying them and the police are onto you and they are hard to get them off you this game will be 6 times bigger than vice city and loads more weapons and much more cars there will be quads and tractors and a dodo with wings and a plane which you can fly to another city.
There is meant to be a secret Island were you can live and even own, there are more contrysides than the other two put together and there is a mountain you can climb and you can ride bikes and there are helicopters with rockets and a mate can fire off it while you're driving and you can even blow up some houses on missions and there are more places to buy and there is a chance that you can build a casino and gamble your income there.