If you want to comprehend or predict the future version of this game or future development, you are doing right thing. However, you need to contribute in the future development as Rockstar prefer to have Constructive feedback of the players to add in next version of the game. The core area of any game is graphic, levels, weapons and others are major areas to get improved.
Be happy as no changes have been made so you can play this new game with your previous experience of playing the GTA game.
Intel Pentuim 4 or AMD XP Processor (or better)
16x Speed DVD Drive
128MB Video Card
DirectX 9 compatible sound & video drivers
Keyboard, mouse or game pad