The gaming world goes into speculation overdrive and GR picks up the pieces.
The character in the trailer might not be the character you play as.
What GR Thinks:
While this would buck the trend of trailers for Vice City and San Andreas, the Eastern European character certainly doesn't look like the natural choice to star in the game.
In fairness, we only see him for a matter of seconds but he lacks the on-screen charisma of CJ and Tommy Vercetti. Furthermore, as far as we can tell, he doesn't fit into any of the existing GTA story arcs - the closest match being the Russian mafia that appeared briefly in GTA: SA.
Having said that, we're most likely seeing him as he appears at the very beginning of the game - weaponless and moneyless - and it wouldn't be unlike Rockstar to tell another rags to riches story. So, a haircut, shave, a sharp suit and an Uzi 9mm in both fists could turn him to a kick ass hero.
Chances of the rumour being true:
Keeping Reading to see more Rumors debunked.