So my guess is GTAV site goes up on the 29th, to replace the placeholder they have now. And then followed by the three character trailers.

I can haz gameplay trailer?

One on Newswire wagers that each trailer will be 30 seconds long, but perhaps we'll get a minute and 22 seconds, or on par with the single teasers so far. I don't think it would be TOO hard to manage. Also, as an aside, I think future advancement in videogames like Uncharted and GTA will be day and night cycles that happen while you do missions or are in different sections of a game. I noted a mission in Uncharted 2 is perpetually during a sunset, which never sets! hahaha