Rockstar has confirmed that they're working on a second trailer for Grand Theft Auto V, but that progress has been slowed by the recent events surrounding Hurricane Sandy.
In a post on the Rockstar website, the situation was explained:
We are working on a second trailer - unfortunately Hurricane Sandy has derailed our plans somewhat but we will have something to show soon. It's hard to be precise as we have no power whatsoever in our New York office. We hope everyone else in affected areas is doing okay.