The Grand Theft Auto V trailer dropped this morning (you've seen it already, if you weren't stuck somewhere hiding from the mob), setting the Speculation Train a'rollin' around the Internets.
PC Gamer suggests that the trailer may indicate multiple playable characters in the game: We saw the older gentleman, presumably doing the voiceover, and a younger guy with a shaved head in the middle of a car chase. Finally, an African American character can be seen briefly running from police choppers. All three end up in the middle of a heist seen in the video, so the story may, at the very least, revolve around a heist that connects these three characters and their stories.
And could multiple playable characters imply some co-op gameplay? Roll on, Speculation Train, roll on!