We have heard that when GTA 6 comes out it will offer gamers a map that is even larger than the one we saw with GTA 5. DJ Whoo Kid from G Unit said that he believed the game would have a setting in Liberty City.
However this may not be so as Liberty City was actually the smallest in the whole of the series. Gamers are calling for a larger map in the new game.
So if it was Liberty City then gamers could become disappointed, after all they would like to have a brand new city to go around exploring. There would be nothing stopping Liberty City being added on as a DLC, but if you cast your mind back to San Andreas, it did come with a mission that said gamers would need to go back into Liberty City so that it could be completed.