Rockstar have detailed some of the new features, vehicles and weapons coming in the update - including the addition of the PC Exclusive radio station called The Lab and the return of the Firework Rocket Launcher! There will also be more clothing and accessory options added to the game, although we don't really see much of these from the snapshots that have so far been released.
4 new cars, 1 new boat and 1 new motorbike are included in the update, further adding to our already bulging garages! There will also be knuckledusters and a marksman pistol added to the ever-expanding stocks of Ammu-Nation stores!