Rockstar have just announced new Grand Theft Auto V trailers will be coming on the 30th April! Note the plural "trailers" - looks like we'll be getting three individual character trailers, possibly a bit shorter than a standard trailer but collectively worth a few minutes of footage.
UPDATE: The trailers will be online at 4 P.M. BST in the UK (that's 11 A.M. EDT if you're in the US).
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