As you all know, GameInformer's December issue is to contain a full feature of Grand Theft Auto V. Revealing the first ever details about the game. Now, since the information is super sensitive, it doesn't surprise me that it has already been leaked.
The protagonist you play as is, Alberta DeSilva. He's half American and half Puerto Rican. He's 42 years old and has two kids and an ex-wife. Albert finds himself in the crime life at an older age, in pursuit of money. Similar to the show, Breaking Bad. He's attempting to raise some money for his family since he lost all of his in a "ponzi" scheme. You also play as Dougie Vejo, a criminal who is trying to make a name for himself in Los Santos.

Los Santos is a major city featured in the game. There are some smaller towns around the outskirts. The famous Grove Street is back. The same street where CJ and Sweet lived in GTA San Andreas.
Remember, these details did not come from Rockstar themselves. It's leaked information so don't take all this into account just yet. Although they do sound pretty legitimate. Grand Theft Auto V will be released in Spring 2013 on all three platforms.