He confirms that it wasn't a cutscene when he sits next to the pool, gets up and goes inside it was actual gameplay.
• He also explains how the switching feature works there is an indicator for each and every protagonist on the zoomed out map which you can select and switch (not scripted)
• He confirms that the mission that was showed during the press showing is 100% gameplay even parts that normally would be a cutscene.
• He confirms Michael and Trevor are Ex-bankrobbers and Franklin sees them as Anti-Role models.
• He says IAA = Internal Affairs Agency (where they have to extract the guy who is being questioned)
• They go their separate ways to the mission they've seen. Michael and Trevor go by helicopter, Franklin goes on his motorcycle (screenshot)
• Soundtrack during mission
• Explosive gameplay, a bit over the top completely unlike GTA IV story wise.
He also tells him where they've done research for GTA V including LAPD, A prison outside of Los Angeles.