Several reliable insiders have shown a screenshot with a list of features that will be in the GTA VI release

Key points:
🟠Jason and Lucia will have dynamic relationship mechanics;
🟠The most developed driving system in the entire series;
🟠Advanced AI of the police;
🟠System of weight gain and weight loss;
🟠Return of the 6 star wanted level;
🟠More than 700 stores: shopping malls and skyscrapers with working elevators;
🟠Vice City — the most massive city in Rockstar's history;
🟠Smooth switching between characters when they are nearby;
🟠NPCs react differently to weapons in their hands;
🟠Underwater exploration with secrets and hidden areas;
🟠Dynamic weather, including storms.